| A (293 species) |
| Aardonyx - Early Jurassic, 195 Ma |
| Abelisaurus - Late Cretaceous, 80 Ma |
| Abrictosaurus - Early Jurassic, 199-196 Ma |
| Abrosaurus - Middle Jurassic |
| Abydosaurus - Early Cretaceous, 104.5 Ma |
| Abyssomedon - Early Permian, Kungurian |
| Acamptonectes - Cretaceous, Hauterivian-Cenomanian |
| Acanthodes - Early Devonian to Early Permian, 409-284 Ma |
| Acanthopholis - Early Cretaceous |
| Acanthostega - Late Devonian, 365 Ma |
| Acheloma - Early Permian, 279.5-272.5 Ma |
| Achelousaurus - Late Cretaceous, 74.2 Ma |
| Acherontiscus - Unavailable |
| Acherontisuchus - Mid-Late Paleocene (Peligran-Itaboraian)~60-58 Ma |
| Acheroraptor - Late Cretaceous, 66 Ma |
| Achillesaurus - Late Cretaceous, 85 Ma |
| Achillobator - Late Cretaceous, 89 Ma |
| Acinacodus - Lower Cretaceous |
| Acinonyx pardinensis - Early to Middle Pleistocene |
| Acleistorhinus - Early Permian, 273.6-271.6 Ma |
| Acristatherium - Early Cretaceous, 125 Ma |
| Acristavus - Late Cretaceous, 79 Ma |
| Acrocanthosaurus - Early Cretaceous Aptian to Albian, 116-110 Ma |
| Acrophyseter - Late Miocene (Laventan-Montehermosan)~13.65-5.332 Ma |
| Acrotholus - Late Cretaceous, 84-83.5 Ma |
| Acteosaurus - 99.6-89.3 Ma Late Cretaceous: Cenomanian - Turonian |
| Adamantinasuchus - Late Cretaceous |
| Adamantisaurus - Late Cretaceous |
| Adapis - Early - Late Eocene |
| Adasaurus - Late Cretaceous, 70 Ma |
| Adelobasileus - Late Triassic, 225 Ma |
| Adelogyrinus - Unavailable |
| Adelolophus - Late Cretaceous, 78 Ma |
| Adelospondylus - Carboniferous |
| Adelphailurus - Middle Miocene-Late Miocene |
| Adeopapposaurus - Early Jurassic |
| Adilophontes - Early Oligocene-Early Miocene |
| Adinophis - Maastrichtian of the Cretaceous |
| Adocus - Early Cretaceous - Oligocene, 125-28 Ma |
| Adriosaurus - Late Cretaceous, 95 Ma |
| Aegirosaurus - Late Jurassic-Early Cretaceous, Tithonian-Valanginian |
| Aegisuchus - Late Cretaceous, 95 Ma |
| Aegyptopithecus - 35-33 Ma Late Eocene-Early Oligocene |
| Aegyptosaurus - mid Cretaceous, 95 Ma |
| Aelurodon - Middle Miocene-Late Miocene |
| Aelurognathus - Wuchiapingian, 260.9-254 Ma |
| Aelurosaurus - Late Permian |
| Aenigmastropheus - Lopingian, 254.7 Ma |
| Aeolosaurus - Late Cretaceous 83-74 Ma |
| Aepyceros datoadeni - Pliocene |
| Aerodactylus - Late Jurassic, 150.8-148.5 Ma |
| Aerosaurus - Early Permian, 295 Ma |
| Aerosteon - Late Cretaceous, 84 Ma |
| Aerotitan - Late Cretaceous |
| Aetiocetus - Late Oligocene |
| Aetobarbakinoides - Late Triassic, 231.4-225.9 Ma |
| Aetodactylus - Late Cretaceous, 97 Ma |
| Aetosauroides - Late Triassic, 231.4-225.9 Ma |
| Afrasia - Late Middle Eocene |
| Afrocyon - Miocene-Pliocene |
| Afrodon - Unavailable |
| Afropithecus - Miocene |
| Afrosmilus - Miocene, 16.9-9 Ma |
| Afrovenator - Middle Jurassic, 167-161 Ma |
| Agathaumas - Late Cretaceous, 66 Ma |
| Agilisaurus - Middle Jurassic, 168-161 Ma |
| Agilodocodon - Middle Jurassic |
| Agnosphitys - Late Triassic, 208 Ma |
| Agnotherium - 17-11 Ma Early Miocene - Middle Miocene |
| Agorophius - Rupelian of the Oligocene |
| Agriotherium - Late Miocene-Gelasian |
| Aguascalientia - Miocene |
| Agujaceratops - Late Cretaceous, 77 Ma |
| Agustinia - Early Cretaceous, 108 Ma |
| Ahshislepelta - Late Cretaceous, Campanian |
| Aigialosaurus - Late Cretaceous |
| Ajkaceratops - Late Cretaceous, Santonian |
| Akaimia - Middle-Late Jurassic, Callovian-Oxfordian |
| Akidolestes - Early Cretaceous, 122 Ma |
| Alamitornis - Late Cretaceous, 70 Ma |
| Alamosaurus - Late Cretaceous, 70 Ma |
| Alanqa - Late Cretaceous, 95 Ma |
| Alaskacephale - Late Campanian, 80-69 Ma |
| Albalophosaurus - Early Cretaceous |
| Albertaceratops - Late Cretaceous, 77.5 Ma |
| Albertadromeus - Late Cretaceous |
| Albertonectes - Late Cretaceous, 73.5 Ma |
| Albertosaurus - Late Cretaceous, 71-68 Ma |
| Albertosuchus - Late Cretaceous |
| Albicetus - Langhian |
| Albinykus - Santonian-Campanian Late Cretaceous |
| Albionbatrachus - Upper Eocene-Lower Miocene, 37.2-17 Ma |
| Alcovasaurus - Late Jurassic, 150 Ma |
| Aldabrachampsus - Unavailable |
| Alectrosaurus - Late Cretaceous, 83-74 Ma |
| Aleosteus - Late Emsian |
| Aletopelta - Campanian |
| Aletrimyti - Early Permian |
| Alexeyisaurus - Late Triassic, 210 Ma |
| Alienochelys - Late Cretaceous, 70 Ma |
| Alierasaurus - Permian |
| Alioramus - Late Cretaceous, 70 Ma |
| Allenypterus - Carboniferous |
| Allodaposuchus - Late Cretaceous, Campanian-Maastrichtian |
| Allopleuron - Late Cretaceous |
| Allosaurus - Late Jurassic, 155-150 Ma |
| Alnashetri - Late Cretaceous, 97 Ma |
| Alocodon - Unavailable |
| Aloposaurus - Late Permian |
| Alphadon - Late Cretaceous |
| Alrausuchus - Middle Permian |
| Altenglanerpeton - Late Carboniferous or Early Permian, 299 Ma |
| Altirhinus - Early Cretaceous |
| Altispinax - Early Cretaceous, 137 Ma |
| Alvarezsaurus - Late Cretaceous, 86-83 Ma |
| Alveusdectes - Late Permian, 256 Ma |
| Alwalkeria - Late Triassic, 228 Ma |
| Alxasaurus - Early Cretaceous, 112-100 Ma |
| Amargasaurus - Early Cretaceous, 129.4-122.46 Ma |
| Amargatitanis - Early Cretaceous |
| Amazonsaurus - 125-100 Ma Early Cretaceous |
| Ambulocetus - Early Eocene, 47.8-41.3 Ma |
| Amebelodon - Middle Miocene-Late Miocene |
| Ammosaurus - Early Jurassic, 200-195 Ma |
| Ampelosaurus - Late Cretaceous, 70 Ma |
| Amphekepubis - Late Cretaceous, 89.3-84.9 Ma |
| Amphicoelias - Late Jurassic, 150 Ma |
| Amphicyanis - Unavailable |
| Amphicyon - Aquitanian-Pleistocene Early Miocene to Early Pleistocene |
| Amtocephale - Late Cretaceous, 84.5-83.5 Ma |
| Amurosaurus - Late Cretaceous, 70-66 Ma |
| Anabisetia - Late Cretaceous, 95-92 Ma |
| Anancus - Late Miocene-Early Pleistocene |
| Anarosaurus - Middle Triassic |
| Anasazisaurus - Late Cretaceous, 74 Ma |
| Anatosuchus - Early Cretaceous |
| Ancalecetus - Late Eocene |
| Anchiceratops - Late Cretaceous, 72-71 Ma |
| Anchiornis - Late Jurassic, 160.89-160.25 Ma |
| Anchisaurus - Early Jurassic, 200-195 Ma |
| Anchitherium - Miocene [1] |
| Anconastes - Late Carboniferous |
| Ancylotherium - 6.5-1.8 Ma Late Miocene to Early Pleistocene |
| Andalgalornis - Late Miocene - Early Pliocene |
| Andesaurus - Cenomanian99.6-97 Ma |
| Andrewsarchus - Middle Eocene, 48-41 Ma |
| Andrewsiphius - Eocene |
| Andrewsornis - Oligocene-Early Miocene (Deseadan)~29.0-21.0 Ma |
| Angelosaurus - Early Permian |
| Angistorhinus - Late Triassic |
| Angolachelys - Turonian |
| Angolasaurus - Late Cretaceous (Turonian - Maastrichtian) |
| Angolatitan - Late Turonian, 90 Ma |
| Anguanax - Late Jurassic, 160 Ma |
| Angulomastacator - Late Cretaceous, 76.9 Ma |
| Angustinaripterus - Middle Jurassic |
| Anhanguera - Albian, 112 Ma |
| Aniksosaurus - Late Cretaceous |
| Animantarx - 104.46-98.37 Ma |
| Ankylosaurus - Late Cretaceous, 68 Ma |
| Anningasaura - Early Jurassic, 201.3-199.6 Ma |
| Anodontosaurus - Late Cretaceous, 72.8-67 Ma |
| Anomocephalus - Middle Permian 260 Ma |
| Anomoiodon - Early Triassic, 249-247 Ma |
| Anoplosaurus - Early Cretaceous, 100 Ma |
| Anserimimus - Late Cretaceous, 70 Ma |
| Antarctopelta - Late Cretaceous, 74-70 Ma |
| Antarctosaurus - Late Cretaceous, 83 Ma |
| Antarctosuchus - Middle Triassic |
| Anteophthalmosuchus - Early Cretaceous, Barremian-Aptian |
| Anteosaurus - Capitanian, 266-260 Ma |
| Antetonitrus - Early Jurassic |
| Anthodon - Changhsingian, 254-252 Ma |
| Anthracodromeus - Late Carboniferous, 307.1-305 Ma |
| Anthracosaurus - Late Carboniferous, 310 Ma |
| Anurognathus - Late Jurassic, 150.8-148.5 Ma |
| Anzu - Late Cretaceous, 66 Ma |
| Aorun - Late Jurassic 161.5 Ma |
| Apachesaurus - Late Triassic, 228-208 Ma |
| Apatomerus - Early Cretaceous |
| Apatosaurus - Tithonian, 152-151 Ma |
| Aphrosaurus - Late Cretaceous, 70-66 Ma |
| Aplestosuchus - Late Cretaceous, Turonian-Santonian |
| Appalachiosaurus - Late Cretaceous, 77 Ma |
| Apsaravis - Late Cretaceous, 78 Ma |
| Apsisaurus - Early Permian |
| Apterodon - Mid Eocene-Oligocene |
| Aptychodon - Cretaceous |
| Aquila bullockensis - Middle Miocene 11-5 Ma |
| Aquilops - Early Cretaceous, 107 Ma |
| Arachana - Late Permian or Early Triassic |
| Araeoscelis - Artinskian, 284.4-275.6 Ma |
| Aragosaurus - Early Cretaceous, Hauterivian-Barremian |
| Aralazhdarcho - Late Cretaceous |
| Aralosaurus - Late Cretaceous, 85.8 Ma |
| Arambourgiania - Late Campanian-Maastrichtian |
| Arandaspis - 480-470 Ma Early Ordovician |
| Araripedactylus - Albian, 112 Ma |
| Araripesaurus - Albian, 112 Ma |
| Araripesuchus - Early - Late Cretaceous, 125 Ma |
| Archaeoceratops - Early Cretaceous, 125 Ma |
| Archaeoindris - Unavailable |
| Archaeoistiodactylus - Middle Jurassic, 160 Ma |
| Archaeolemur - Unavailable |
| Archaeonectrus - Jurassic |
| Archaeopteryx - Late Jurassic, 150.8-148.5 Ma |
| Archaeornithoides - Late Cretaceous, 75 Ma |
| Archaeornithomimus - Late Cretaceous, 70 Ma |
| Archaeosyodon - Middle Permian |
| Archaeotherium - Late Eocene to Early Oligocene,38-24.8 Ma |
| Archaeothyris - Late Carboniferous, 306 Ma |
| Archaeovenator - Late Carboniferous, 300 Ma |
| Archaerhineura - Paleocene, 57 Ma |
| Archelon - Late Cretaceous, 80.5 Ma |
| Archeopelta - Middle - Late Triassic, 230-225 Ma |
| Archeria - Early Permian |
| Arcovenator - Late Cretaceous, 74 Ma |
| Arctamphicyon - Unavailable |
| Arcticodactylus - Late Triassic, 208-201 Ma |
| Arctodus - Middle Pleistocene to Early Holocene, 1.8-0.010 Ma |
| Arctognathus - Permian |
| Arctops - Late Permian |
| Arcusaurus - Early Jurassic, Hettangian-Sinemurian |
| Arenysaurus - Late Cretaceous, 66 Ma |
| Arenysuchus - Late Cretaceous, 67.6 Ma |
| Arganaceras - Wuchiapingian, 260-254 Ma |
| Arganarhinus - Late Triassic, 221 Ma |
| Argentavis - Late Miocene, 6 Ma |
| Argentinosaurus - Late Cretaceous, 97-93.5 Ma |
| Argyrosaurus - Late Cretaceous 90 Ma |
| Aristonectes - Late Cretaceous |
| Aristosuchus - Early Cretaceous |
| Arizonasaurus - Middle Triassic, 243 Ma |
| Arkharavia - Late Cretaceous, 66 Ma |
| Armadillosuchus - Late Cretaceous |
| Arrhinoceratops - Early Maastrichtian, 70.6-70 Ma |
| Arsinoitherium - 36-27 Ma Late Eocene - Early Oligocene |
| Arthropterygius - Late Jurassic |
| Arthurdactylus - Albian |
| Artiocetus - early Lutetian |
| Ashleychelys - Oligocene |
| Ashorocetus - Chattian |
| Asiaceratops - Late Cretaceous, 99 Ma |
| Asiatosaurus - Early Cretaceous |
| Asilisaurus - Middle Triassic, 245 Ma |
| Aspidorhynchus - Middle Jurassic-Late Cretaceous |
| Aspidosaurus - Late Carboniferous - Early Permian |
| Asprosaurus - Late Cretaceous Santonian-Campanian |
| Astrapotherium - Early-Mid Miocene (Colhuehuapian-Laventan)~21.0-11.8 Ma |
| Astraspis - 467-443 Ma middle-late Ordovician |
| Astrodon - Early Cretaceous, 112 Ma |
| Astrohippus - 16.3-4.9 Ma Barstovian to Late Hemphillian[1] |
| Astrophocaudia - Early Cretaceous, 112 Ma |
| Asylosaurus - Late Triassic |
| Atacamatitan - Upper Cretaceous |
| Athabascasaurus - Lower Cretaceous, 112.6-109 Ma |
| Atlantochelys - Late Cretaceous, 83 Ma |
| Atlantosaurus - Late Jurassic, 150 Ma |
| Atlasaurus - Bathonian-Callovian |
| Atlascopcosaurus - Early Cretaceous,[1]114 Ma |
| Atolchelys - Cretaceous |
| Atopodentatus - Middle Triassic, 240 Ma |
| Atrociraptor - Late Cretaceous, 68.5 Ma |
| Atsinganosaurus - Late Cretaceous, 66 Ma |
| Attenborosaurus - Early Jurassic |
| Attockicetus - Eocene |
| Atychodracon - Late Triassic-Early Jurassic, 201 Ma |
| Aublysodon - Late Cretaceous, 75 Ma |
| Aucasaurus - Late Cretaceous, 83 Ma |
| Augustaburiania - Early Triassic, Olenekian |
| Augustasaurus - Middle Triassic |
| Augustynolophus - Late Cretaceous, 70 Ma |
| Aulophyseter - Mid-Late Miocene~15.97-5.332 Ma |
| Auroraceratops - Early Cretaceous, Aptian |
| Aurornis - Late Jurassic, 160 Ma |
| Aussiedraco - Early Cretaceous, Albian |
| Australobarbarus - Late Permian |
| Australodocus - Late Jurassic |
| Australosyodon - Middle Permian, 265 Ma |
| Australovenator - Late Cretaceous,[1] 95 Ma |
| Austriadactylus - Late Triassic, 215 Ma |
| Austriadraco - Late Triassic, 208 Ma |
| Austrocheirus - Cenomanian~96.2 Ma |
| Austroptyctodus - Late Frasnian |
| Austroraptor - Late Cretaceous, 70 Ma |
| Austrosaurus - Early Cretaceous, 110-105 Ma |
| Avaceratops - Late Cretaceous, 77 Ma |
| Avalonnectes - Early Jurassic, 199.6-198 Ma |
| Aviatyrannis - Late Jurassic, Kimmeridgian |
| Avimimus - Late Cretaceous, 70 Ma |
| Avitabatrachus - Middle Cretaceous, 99.6-93.5 Ma |
| Azendohsaurus - Late Triassic, 235-231 Ma |
| Azhdarcho - Late Cretaceous, 92 Ma |
| B (129 species) |
| Babakotia - Unavailable |
| Babiacetus - Middle Eocene |
| Babibasiliscus - Early Eocene, 48 Ma |
| Bactrosaurus - Late Cretaceous, 70 Ma |
| Bagaceratops - Late Cretaceous, 80 Ma |
| Bagaraatan - Late Cretaceous, 70 Ma |
| Baguatherium - Unavailable |
| Bahariasaurus - Late Cretaceous, 95 Ma |
| Bainoceratops - Unavailable |
| Bakonybatrachus - Late Cretaceous, Santonian |
| Bakonydraco - Late Cretaceous, Santonian |
| Balaur - Late Cretaceous, 70 Ma |
| Baldwinonus - Early Permian |
| Balochisaurus - Late Cretaceous, Maastrichtian |
| Bambiraptor - Late Cretaceous, 72 Ma |
| Banguela - Albian |
| Banji - Late Cretaceous, 66 Ma |
| Banksiops - Unavailable |
| Baotianmansaurus - Late Cretaceous |
| Barapasaurus - 196.5-183 Ma Early Jurassic |
| Barbatteius - Late Cretaceous (early Maastrichtian) |
| Barbourofelis - Late Miocene-Pliocene 13.6-5.3 Ma |
| Barcinosuchus - Early Cretaceous, Aptian-Albian |
| Barilium - Early Cretaceous, 140 Ma |
| Barosaurus - Late Jurassic, 152-150 Ma |
| Barracudasauroides - Middle Triassic, Anisian |
| Barreirosuchus - Late Cretaceous, Turonian-Santonian |
| Barrosasaurus - Late Cretaceous |
| Barsboldia - Late Cretaceous, 70 Ma |
| Barylambda - Middle Paleocene - Early Eocene, 60-50 Ma |
| Baryonyx - Early Cretaceous, 130-125 Ma |
| Barytherium - Late Eocene-Early Oligocene |
| Bashkyroleter - Middle Permian, Guadalupian |
| Bashuchelys - Middle Jurassic |
| Basilosaurus - Late Eocene |
| Basiloterus - Late Eocene |
| Bathygnathus - Early Permian, 270 Ma |
| Batrachognathus - Late Jurassic |
| Batrachotomus - Middle Triassic, 242-235 Ma |
| Batyrosaurus - Late Cretaceous |
| Bauria - Early Triassic, 251-246 Ma |
| Baurusuchus - Late Cretaceous, Turonian-Santonian |
| Baurutitan - Late Cretaceous |
| Bavarisaurus Bavarian lizard) - Late Jurassic |
| Bawitius - Cenomanian |
| Becklespinax - Early Cretaceous, 133 Ma |
| Beelzebufo - Late Cretaceous, 70 Ma |
| Beipiaopterus - Early Cretaceous, 124.6 Ma |
| Beipiaosaurus - Early Cretaceous, 124.6 Ma |
| Beishanlong - Early Cretaceous,[1] 115-100 Ma |
| Beishanodon - Early Triassic |
| Beiyanerpeton - Late Jurassic, 157 Ma |
| Belantsea - Lower Carboniferous |
| Belebey - Asselian-Guadalupian |
| Bellubrunnus - Late Jurassic, 151 Ma |
| Bellusaurus - Middle Jurassic, 170 Ma |
| Belodon - Triassic |
| Bennettazhia - Early Cretaceous, 100 Ma |
| Benthosuchus - Early Triassic |
| Bentonyx - Middle Triassic, Anisian |
| Berberosaurus - Pliensbachian, 185 Ma |
| Bergamodactylus - Late Triassic, 216-211 Ma |
| Bernissartia - Early Cretaceous, 130 Ma |
| Berycopsis - Late Cretaceous |
| Besanosaurus - Middle Triassic, 247.2-235.0 Ma[1] |
| Betasuchus - Late Cretaceous, 66 Ma |
| Biarmosuchus - Wordian, 267 Ma |
| Bicentenaria - Late Cretaceous, 90 Ma |
| Bienosaurus - Early Jurassic |
| Bienotherium - Early Jurassic |
| Bihariosaurus - Berriasian of the Cretaceous |
| Bissektipelta - Unavailable |
| Bistahieversor - Late Cretaceous, 74.5 Ma |
| Blasisaurus - Late Cretaceous, 66 Ma |
| Blikanasaurus - Late Triassic |
| Bogolubovia - Late Cretaceous |
| Bolong - Early Cretaceous, 125 Ma |
| Bonapartenykus - Late Cretaceous, 70 Ma[1] |
| Bonatitan - Cretaceous, Late Campanian-Early Maastrichtian |
| Bonitasaura - Late Cretaceous, 85 Ma |
| Bonnerichthys - Late Cretaceous, 87-81 Ma |
| Borealonectes - Middle Jurassic |
| Borealosaurus - Late Cretaceous, 95-90 Ma |
| Borealosuchus - Late Cretaceous-Eocene |
| Boreaspis - Pragian-Emsian |
| Boreopterus - Early Cretaceous, 124.6 Ma |
| Borhyaena - Early Miocene (Santacrucian)~17.5-15.5 Ma [1] |
| Borogovia - Late Cretaceous, 70 Ma |
| Borophagus - Middle Miocene to Late Pliocene, 12-2 Ma |
| Bothriolepis - Late Devonian~387-360 Ma |
| Bothriospondylus - Late Jurassic, 157-152.2 Ma |
| Brachauchenius - Late Cretaceous, 93-89.3 Ma |
| Brachiosaurus - Late Jurassic, 154-153 Ma |
| Brachyceratops - Late Cretaceous, 74.5 Ma |
| Brachychampsa - 83.5-63.3 Ma Late Cretaceous - Early Paleocene |
| Brachycyon - 23.3-7 Ma Early Miocene - Middle Miocene |
| Brachygnathosuchus - Pliocene |
| Brachyhyops - Middle to Late Eocene |
| Brachylophosaurus - Late Cretaceous, 78 Ma |
| Brachyprosopus - Middle Permian, 270-260 Ma |
| Brachypterygius - Late Jurassic, Kimmeridgian-Tithonian |
| Brachysuchus - Late Triassic, Carnian |
| Brachytrachelopan - Late Jurassic |
| Bradysaurus - Capitanian, 265-260 Ma |
| Brancasaurus - Berriasian |
| Branisella - Late Oligocene-Early Miocene (Deseadan)~29.0-21.0 Ma |
| Brasileodactylus - Early Cretaceous, 112 Ma |
| Brasilitherium - Late Triassic, 240-200 Ma |
| Brasilodon - Late Triassic |
| Brazilosaurus - Early Permian, 284-279.5 Ma |
| Breviceratops - Unavailable |
| Brindabellaspis - Early Devonian |
| Brithopus - Middle Permian, Ufimian |
| Brodavis - Late Cretaceous, 80.5 Ma |
| Brohisaurus - Late Jurassic |
| Bromsgroveia - Middle Triassic |
| Brontochelys - Unavailable |
| Brontomerus - Lower Cretaceous, Aptian-Albian |
| Brontornis - Miocene |
| Brontosaurus - Late Jurassic, 155-151 Ma |
| Broomicephalus - Permian |
| Broomisaurus - Permian |
| Bruhathkayosaurus - Late Cretaceous, 70 Ma |
| Brygmophyseter - Miocene |
| Buitreraptor - Late Cretaceous, 94 Ma |
| Bullacephalus - Late Permian |
| Bullockornis - Middle Miocene |
| Burnetia - Late Permian |
| Byronosaurus - Late Cretaceous, 80-75 Ma |
| C (211 species) |
| Cachiyacuy - Middle Eocene (Divisaderan)~41 Ma |
| Cacibupteryx - Late Jurassic, 156 Ma |
| Cacops - Early Permian, Kungurian |
| Caenagnathasia - Late Cretaceous, 90 Ma |
| Caiman wannlangstoni - Mid-Late Miocene (Laventan-Montehermosan)~13.8-5.332 Ma |
| Calcarichelys - Early Cretaceous-Late Cretaceous,[1][2] 120-70 Ma |
| Californosaurus - 228-210 Ma Late Triassic |
| Callawayasaurus - Early Cretaceous, Aptian |
| Callawayia - Late Triassic, 221.5-212.0 Ma[1] |
| Callovosaurus - Middle Jurassic, approximately 163 Ma |
| Calsoyasuchus - Early Jurassic, 196.5 Ma |
| Camarasaurus - Late Jurassic, 155-145 Ma |
| Camarillasaurus - Early Cretaceous |
| Camelops - Late Pliocene to Early Holocene, 2.5-0.010 Ma |
| Camelotia - Late Triassic-Early Jurassic |
| Camposaurus - Late Triassic, 220 Ma |
| Camptosaurus - Late Jurassic |
| Campylodoniscus - Late Cretaceous, 95 or 70 |
| Campylognathoides - Early Jurassic, 182 Ma |
| Canaanimys - Mid Eocene (Divisaderan)~41 Ma |
| Canis apolloniensis - Early Pleistocene 1.9-1.6 Ma |
| Canis armbrusteri - Middle Pleistocene-Late Pleistocene |
| Canis dirus - Late Pleistocene - early Holocene (125,000-9,000 years ago) |
| Canis edwardii - Blancan-Irvingtonian |
| Canis falconeri - Unavailable |
| Canis ferox - Late Miocene to Early Pliocene, 10.9-5.8 Ma |
| Canis lepophagus - Late Miocene-Early Pleistocene |
| Canobius - Early Carboniferous |
| Captorhinus - Cisuralian, 280-270.6 Ma |
| Carbonemys - Mid-Late Paleocene (Peligran-Itaboraian)~60-58 Ma |
| Carcharocles/Carcharodon angustidens - Oligocene - Miocene |
| Carcharocles/Carcharodon auriculatus - Oligocene - Miocene |
| Carcharocles/Carcharodon chubutensis - Oligocene - Pliocene |
| Carcharodon hubbelli - Late Miocene |
| Carcharodontosaurus - Early-Late Cretaceous, 112-93.5 Ma |
| Cardabiodon - Late Cretaceous |
| Cargninia - Late Triassic, Carnian-Norian |
| Caribemys - Oxfordian |
| Carinodens - Late Cretaceous |
| Caririsuchus - Early Cretaceous |
| Carniadactylus - Late Triassic, 228 Ma |
| Carnotaurus - Late Cretaceous (Lower Maastrichtian), 72-69.9 Ma |
| Carnufex - Late Triassic, 231 Ma |
| Carolinacetus - Middle Eocene |
| Carsosaurus - 100 Ma Late Cretaceous |
| Cartorhynchus - Early Triassic, 248 Ma |
| Caryonosuchus - Late Cretaceous |
| Casea - Early Permian |
| Caseosaurus - Late Triassic |
| Casineria - Early Carboniferous, 340 Ma |
| Castoroides - Late Pliocene - Late Pleistocene, 3-0.011 Ma |
| Cathartesaura - Cenomanian, 97-93 Ma |
| Cathayopterus - Early Cretaceous, 122 Ma |
| Caudipteryx - Early Cretaceous, 124.6 Ma |
| Caulkicephalus - Early Cretaceous, 130 Ma |
| Caviramus - Late Triassic, 205 Ma |
| Caypullisaurus - Late Jurassic - Early Cretaceous, Tithonian-Berriasian |
| Cearadactylus - Aptian-Albian, 112 Ma |
| Cedarosaurus - Early Cretaceous, 126 Ma |
| Cedarpelta - Early Cretaceous, 116-109 Ma |
| Cedrorestes - Early Cretaceous, Barremian |
| Celtedens - Late Jurassic - Late Cretaceous |
| Centenariosuchus - Early-Mid Miocene (Hemingfordian)~20.43-15.97 Ma |
| Centrosaurus - Late Cretaceous, 76.5-75.5 Ma |
| Cephalaspis - Early Devonian 415-398 Ma |
| Cerasinops - Late Cretaceous |
| Cerataelurus - Unavailable |
| Ceratodus - 228-55 Ma Late Triassic-Eocene |
| Ceratogaulus - Late Miocene-Pleistocene |
| Ceratonykus - Late Cretaceous |
| Ceratosaurus - Late Jurassic, 153-148 Ma |
| Cerberophis - Maastrichtian of the Cretaceous |
| Cerdodon - Unavailable |
| Cerdorhinus - Permian |
| Cerrejonemys - Mid-Late Paleocene (Peligran-Itaboraian)~60-58 Ma |
| Cerrejonisuchus - Mid-Late Paleocene (Peligran-Itaboraian)~60-58 Ma |
| Cervalces - Pliocene-Pleistocene |
| Cetarthrosaurus - Cretaceous, 99.6 Ma |
| Cetiosauriscus - Middle Jurassic, 166-164 Ma |
| Cetiosaurus - Middle Jurassic, 167 Ma |
| Chalicotherium - Late Oligocene-Early Pliocene |
| Champsosaurus - Late Cretaceous-Eocene |
| Chanaresuchus - Middle Triassic, 236-234 Ma |
| Changchengopterus - Late Jurassic, 160 Ma |
| Changyuraptor - Early Cretaceous, 125 Ma |
| Chaoyangopterus - Early Cretaceous, 120 Ma |
| Chaoyangsaurus - Late Jurassic, 148 Ma |
| Charitosaurus - Unavailable |
| Charonosaurus - Late Cretaceous, 66 Ma |
| Charruodon - Middle Triassic-Late Triassic |
| Chasmosaurus - Late Cretaceous, 76.5-75.5 Ma |
| Chebsaurus - Mid to Late Jurassic |
| Cheirolepis - Middle Devonian-Late Devonian |
| Chelosphargis - Late Cretaceous, 83 Ma |
| Chialingosaurus - 160 Ma |
| Chiayusaurus - Late Jurassic-Early Cretaceous |
| Chilantaisaurus - Late Cretaceous, 92 Ma |
| Chilesaurus - Late Jurassic145 Ma |
| Chilotherium - Late Miocene-Pliocene |
| Chindesaurus - Late Triassic, 235-210 Ma |
| Chiniquodon - Middle Triassic |
| Chinlea - 228.0-203.6 Ma Late Triassic |
| Chinshakiangosaurus - Early Jurassic |
| Chirostenotes - Late Cretaceous, 76.5 Ma |
| Chlynovia - Late Permian |
| Chondrosteosaurus - Early Cretaceous |
| Chonecetus - Oligocene |
| Chriacus - Early Paleocene-Early Eocene |
| Chromogisaurus - Late Triassic, 230 Ma |
| Chrysocetus - Eocene |
| Chthonophis - Early Paleocene |
| Chuandongocoelurus - Middle Jurassic, 165 Ma |
| Chuanjiesaurus - Middle Jurassic, 168 Ma |
| Chubutisaurus - Early Cretaceous, Albian |
| Chunerpeton - Middle or Late Jurassic, 164 Ma |
| Chungkingosaurus - 160 Ma |
| Chupacabrachelys - Late Cretaceous, Campanian |
| Chuxiongosaurus - Early Jurassic |
| Cimoliasaurus - Early to Late Cretaceous |
| Cimolichthys - 83.5-70.6 Ma Late Cretaceous[1] |
| Cionodon - Late Cretaceous, 66 Ma |
| Circus dossenus - Unavailable |
| Circus eylesi - Unavailable |
| Cistecephalus - Wuchiapingian, 259.8-254.1 Ma |
| Citipati - Late Cretaceous, 84-75 Ma |
| Cladoselache - Late Devonian |
| Claosaurus - Late Cretaceous, 87-82 Ma |
| Clelandina - Late Permian 259-254 Ma |
| Clepsydrops - Carboniferous |
| Clevosaurus - Late Triassic-Early Jurassic |
| Clidastes - Late Cretaceous |
| Climatius - Late Silurian-Early Devonian |
| Coahuilaceratops - Late Cretaceous, 72.5-71.4 Ma |
| Cobelodus - Carboniferous |
| Coccosteus - Middle Devonian-Late Devonian |
| Cochleosaurus - Moscovian 310 Ma |
| Coelodonta - 3.7-0.01 Ma Pliocene - Pleistocene |
| Coelophysis - Late Triassic-Early Jurassic, 203-196 Ma |
| Coelurosauravus - Lopingian, 260.4-251 Ma |
| Coelurus - Late Jurassic, 153-150 Ma |
| Colepiocephale - Late Cretaceous, 80-77.5 Ma |
| Collilongus - Early Triassic |
| Colobodectes - Middle Permian |
| Coloborhynchus - Early Cretaceous, 140-136 Ma |
| Colombophis - Middle to Late Miocene |
| Colossochelys - Miocene-Pleistocene |
| Colosteus - Late Carboniferous, 307.1-305 Ma |
| Colymbosaurus - Callovian to late Tithonian |
| Comahuesaurus - Early Cretaceous, Aptian-Albian |
| Comahuesuchus - Late Cretaceous, 85 Ma |
| Comodactylus - Late Jurassic, 155 Ma |
| Compsodon - Upper Permian |
| Compsognathus - Late Jurassic, 150.8 Ma |
| Compsosuchus - Late Cretaceous, 69 Ma |
| Concavenator - Early Cretaceous, 130 Ma |
| Concavispina - Late Triassic, Carnian |
| Conchoraptor - Late Cretaceous |
| Condorchelys - Middle Jurassic, 170 Ma |
| Condorraptor - Middle Jurassic |
| Confuciusornis - Early Cretaceous, 125-120 Ma |
| Contectopalatus - Mid Triassic, 247.2-235.0 Ma[1] |
| Coringasuchus - Late Cretaceous |
| Corosaurus - Early Triassic, 247.4-245 Ma |
| Coryphodon - Late Paleocene - Middle Eocene, 57-46 Ma |
| Corythosaurus - Late Cretaceous, 77-75.7 Ma |
| Cotylorhynchus - Kungurian, 279.5-272 Ma |
| Craspedodon - 85 Ma |
| Crassigyrinus - Visean 345.3-328.3 Ma |
| Cratochelone - Albian |
| Cretolamna - Barremian - Miocene [1] |
| Cretoxyrhina - Late Cretaceous, 100-82 Ma |
| Crichtonsaurus - Late Cretaceous, Cenomanian-Turonian |
| Criocephalosaurus - Capitanian |
| Cristatusaurus - Unavailable |
| Crocodylus anthropophagus - 1.84 Ma |
| Crocodylus falconensis - Early Pliocene (Montehermosan-Chapadmalalan)~5.332-3.6 Ma |
| Crocodylus thorbjarnarsoni - Pliocene - Pleistocene, 4.2-2.0 Ma |
| Crocuta crocuta spelaea - Middle to Late Pleistocene, 0.5-0.011 Ma |
| Cronopio - Late Cretaceous, 99.6-96 Ma |
| Crusafontia - Barremian |
| Cruxicheiros - Middle Jurassic, 167 Ma |
| Cryolophosaurus - Early Jurassic, 194-188 Ma |
| Cryopterygius - Late Jurassic, Tithonian |
| Cryptoclidus - Middle Jurassic, 166-164 Ma |
| Cryptocynodon - Unavailable |
| Cryptosaurus - Late Jurassic |
| Cteniogenys - Middle Jurassic-Late Cretaceous |
| Cteniosaurus - Unavailable |
| Ctenochasma - Late Jurassic to Cretaceous150-145 Ma |
| Ctenorhachis - Early Permian, Artinskian |
| Ctenosauriscus - Early Triassic, 247.5-247.2 Ma |
| Ctenospondylus - Early Permian Artinskian-Kungurian |
| Ctenurella - Late Devonian |
| Culebrasuchus - Early-Mid Miocene (Hemingfordian)~20.6-16.3 Ma |
| Cumnoria - Upper Jurassic, Kimmeridgian |
| Cuspicephalus - Late Jurassic, 155.7-153 Ma |
| Cuvieronius - Pliocene-Holocene (Blancan-Rancholabrean (NALMA) & Montehermosan-Lujanian (SALMA)~4.9-0.0134 Ma |
| Cyamodus - Middle Triassic 247-235 Ma |
| Cyclotosaurus - Late Triassic |
| Cycnorhamphus - Late Jurassic, 152 Ma |
| Cymatosaurus - Early-Middle Triassic, 247.5-237 Ma |
| Cymbospondylus - 240-210 Ma Between the Middle and Late Triassic |
| Cynelos - 23.3-7 Ma Early Miocene - Middle Miocene |
| Cynodictis - Late Eocene-Early Oligocene |
| Cynodontosuchus - Late Cretaceous, Coniacian-Santonian |
| Cynognathus - Early - Middle Triassic, 247-237 Ma |
| Cynosaurus - Late Permian, 265.1-254.17 Ma |
| Cynthiacetus - Late Eocene~37.2-33.9 Ma |
| Cyonosaurus - Late Permian |
| Cypretherium - Chadronian |
| Czatkowiella - Early Triassic |
| D (154 species) |
| Daanosaurus - Late Jurassic |
| Dacentrurus - Late Jurassic, 154-150 Ma |
| Dactylosaurus - Lower and Middle Triassic (Olenekian to Anisian) |
| Dadadon - Middle Triassic |
| Daemonosaurus - Late Triassic, Rhaetian |
| Daeodon - 29-19 Ma Late Oligocene - Early Miocene |
| Dagasuchus - Middle Triassic, 235 Ma |
| Dahalokely - Turonian~94.3-89.3 Ma |
| Dakosaurus - Late Jurassic - Early Cretaceous,157-137 Ma |
| Dakotadon - Early Cretaceous, Barremian |
| Dakotaraptor - Late Cretaceous, 66 Ma |
| Dalianraptor - Early Cretaceous, 120 Ma |
| Dalingheornis - Early Cretaceous, 122 Ma |
| Dallasaurus - 92 Ma Late Cretaceous |
| Damalborea - Middle Pliocene |
| Daohugoupterus - Bathonian to Oxfordian,[1] 164 Ma |
| Daphoenictis - Unavailable |
| Daphoenodon - Unavailable |
| Daphoenus - 42-16.3 Ma Middle Eocene-Early Miocene |
| Dapingfangornis - Early Cretaceous, 120 Ma |
| Daptocephalus - Late Permian |
| Dartmuthia - Late Silurian |
| Darwinopterus - Middle Jurassic, 160.89-160.25 Ma |
| Dashanpusaurus - Jurassic |
| Daspletosaurus - Late Cretaceous, 77-74 Ma |
| Datanglong - Early Cretaceous |
| Datousaurus - Middle Jurassic |
| Dawndraco - Late Cretaceous, 86 Ma |
| Dawsonicyon - Middle Eocene |
| Daxiatitan - Early Cretaceous, 122.6 Ma |
| Dearcmhara - Jurassic, 183.0-168.4 Ma[1] |
| Deccanodon - Late Triassic |
| Decuriasuchus - Middle Triassic, 240-235 Ma |
| Deinocheirus - Late Cretaceous, 71-69 Ma |
| Deinogalerix - Late Miocene 10-5 Ma |
| Deinonychus - Early Cretaceous, 115-108 Ma |
| Deinosuchus - Late Cretaceous, 82-73 Ma |
| Deinotherium - Middle Miocene-Early Pleistocene |
| Delapparentia - 130-127 Ma |
| Delectosaurus - Late Permian |
| Delphaciognathus - Unavailable |
| Delphyodontos - Bashkirian |
| Deltadromeus - Late Cretaceous, 95 Ma |
| Deltaherpeton - 330 Ma |
| Deltavjatia - Capitanian, 260 Ma [1] |
| Deltoptychius - Early Carboniferous-Late Carboniferous |
| Demandasaurus - Early Cretaceous, 125 Ma |
| Dendrorhynchoides - Middle Jurassic, 164 Ma |
| Desmatosuchus - Late Triassic, 228-210 Ma |
| Desmostylus - Oligocene-Miocene |
| Deuterosaurus - Capitanian |
| Devincenzia - Late Miocene - Early Pliocene |
| Diabloceratops - Late Cretaceous, 79.9 Ma |
| Diacodexis - Early Eocene |
| Diadectes - Artinskian-Kungurian 290-272 Ma |
| Diademodon - Middle Triassic |
| Diadiaphorus - Early-Late Miocene (Santacrucian-Huayquerian)~17.5-6.8 Ma |
| Diaelurodon - Unavailable |
| Diamantinasaurus - Late Cretaceous, 93.9 Ma |
| Dianchungosaurus - Sinemurian 195.5-189.6 Ma |
| Diandongosuchus - Middle Triassic |
| Dicraeosaurus - Late Jurassic, 155-150 Ma |
| Dicynodon - Changhsingian, 253.8-251 Ma |
| Dicynodontoides - Late Permian, 260-251 Ma |
| Didelphodon - Late Cretaceous,[1] 73 Ma |
| Diegocanis - Late Triassic |
| Digalodon - Permian 299-252 Ma |
| Diictodon - Wuchiapingian, 259.8-254.1 Ma |
| Dilambdogale - 37.2 Ma Late Eocene |
| Dilong - Early Cretaceous, 125-124.6 Ma |
| Dilophosaurus - Early Jurassic, 193 Ma |
| Dimacrodon - Lower Permian |
| Dimaitherium - Priabonian Age, Upper Eocene Epoch |
| Dimetrodon - Cisuralian, 295-272 Ma |
| Dimorphodon - Early Jurassic, 195-190 Ma |
| Dinaelurus - Late Eocene-Late Oligocene |
| Dinailurictis - Unavailable |
| Dinanomodon - Late Permian |
| Dinheirosaurus - Late Jurassic, early Tithonian |
| Dinichthys - Late Devonian, 380-360 Ma |
| Dinictis - Late Eocene to Early Miocene, 37.2-20.4 Ma |
| Dinocephalosaurus - Anisian, 244 Ma |
| Dinocrocuta - Middle Miocene-Late Miocene |
| Dinodontosaurus - Middle Triassic-Late Triassic |
| Dinofelis - Pliocene-Pleistocene, 5-1.2 Ma |
| Dinogorgon - Late Permian 259-254 Ma |
| Dinohippus - Late Miocene-Late Pliocene |
| Dinopithecus - Pliocene |
| Dinosuchus - Late Miocene-Late Pliocene (Montehermosan-Uquian)~5.332-2.588 Ma [1] |
| Diorocetus - Miocene |
| Diplocaulus - 299-251 Ma Early to Late Permian |
| Diplocynodon - Paleocene-Middle Eocene |
| Diplodocus - Late Jurassic, 154-152 Ma |
| Diplomystus - Hauterivian (Early Cretaceous) to early Eocene, 136.4-48 Ma |
| Diplovertebron - Late Carboniferous |
| Dipnorhynchus - Early to Late Devonian |
| Diprotodon - Pleistocene, 1.6-0.046 Ma |
| Dipterus - 376.1-208.7 Ma Late Devonian-Late Triassic |
| Discosaurus - Late Cretaceous, 80.5 Ma |
| Dissopsalis - Middle Miocene-Late Miocene |
| Diunatans - Early Pliocene |
| Djupedalia - Late Jurassic |
| Docodon - Upper Jurassic |
| Docofossor - Middle Jurassic |
| Doedicurus - Pleistocene-Holocene (Uquian-Lujanian)~2-0.011 Ma [note 1] |
| Dolerosaurus - Late Triassic, 231-228 Ma |
| Dolichorhynchops - Late Cretaceous, 93.5-70.6 Ma |
| Dolichosaurus - Upper Cretaceous |
| Doliosauriscus - Unavailable |
| Dollosaurus - Late Cretaceous |
| Domeykodactylus - Early Cretaceous |
| Dongbeititan - Early Cretaceous, 125 Ma |
| Dongyangopelta - Cretaceous, 113-93.9 Ma |
| Dongyangosaurus - Late Cretaceous |
| Dormaalocyon - Early Eocene |
| Dorudon - Late Eocene |
| Doryaspis - Early Devonian |
| Dorygnathus - Early Jurassic, 180 Ma |
| Doswellia - Late Triassic, 220 Ma |
| Draconyx - Late Jurassic, Tithonian |
| Dracopelta - Unavailable |
| Dracoraptor - Early Jurassic, 201-199 Ma |
| Dracorex - Late Cretaceous, 66 Ma |
| Dracovenator - Early Jurassic, 201-199 Ma |
| Drassonax - Oligocene |
| Dravidosaurus - Late Cretaceous |
| Dreadnoughtus - Late Cretaceous, 75 Ma |
| Drepanaspis - Early Devonian |
| Drepanosaurus - Late Triassic |
| Drinker - Late Jurassic |
| Driveria - Unavailable |
| Dromaeosauroides - Early Cretaceous, 140 Ma |
| Dromaeosaurus - Late Cretaceous, 76.5-74.8 Ma |
| Dromomeron - Late Triassic, 220-211.9 Ma |
| Dromornis - Late Miocene - Early Pliocene |
| Drusilasaura - Upper Cretaceous, Cenomanian-Turonian |
| Dryadissector - Late Cretaceous, 80-82 Ma |
| Dryopithecus - 12-9 Ma Miocene |
| Dryosaurus - Late Jurassic, 155-145 Ma |
| Dryptosaurus - Late Cretaceous, 67 Ma |
| Dsungaripterus - Early Cretaceous |
| Dubreuillosaurus - Middle Jurassic, 168-166 Ma |
| Duerosuchus - Middle Eocene |
| Duffinselache - Late Triassic, Rhaetian |
| Dunkleosteus - Frasnian-Famennian, 382-358 Ma |
| Dunyu - Silurian, Ludlow |
| Duriatitan - Late Jurassic |
| Duriavenator - Middle Jurassic, 170 Ma |
| Dvellecanus - Early Permian |
| Dvinia - Late Permian, 254 Ma |
| Dyoplosaurus - Late Cretaceous, 76.5 Ma |
| Dyrosaurus - Late Cretaceous to Eocene, 90-40 Ma |
| Dyslocosaurus - Late Jurassic |
| Dystrophaeus - Late Jurassic, 154.8 Ma |
| E (142 species) |
| Eastmanosteus - Middle to Late Devonian |
| Echinochimaera - Upper Mississippian, 318.1-328.3 Ma |
| Echinodon - Early Cretaceous, 140 Ma |
| Ecteninion - Late Triassic |
| Ectenosaurus - 100 Ma Late Cretaceous |
| Edaphosaurus - Late Carboniferous - Early Permian, 300-280 Ma |
| Edestus - Late Carboniferous |
| Edgarosaurus - Early Cretaceous |
| Edmarka - Late Jurassic, 153-148 Ma |
| Edmontonia - Late Cretaceous, 76.5-69 Ma |
| Edworthia - 61.5 Ma Early Paleocene |
| Effigia - Rhaetian Late Triassic |
| Efraasia - Late Triassic, 210 Ma |
| Eidolosaurus - 100 Ma Late Cretaceous |
| Einiosaurus - Upper Cretaceous, 74.5-74 Ma |
| Ekorus - Late Miocene (6 MYA) |
| Ekrixinatosaurus - Late Cretaceous, 98 Ma |
| Elaltitan - Late Cretaceous, 96.5-89.3 Ma |
| Elanodactylus - Early Cretaceous, 124.6 Ma |
| Elaphrosaurus - Late Jurassic, 154-150 Ma |
| Elasmosaurus - Late Cretaceous, 80.5 Ma |
| Elasmotherium - Late Pliocene to Late Pleistocene, 2.588-0.029 Ma |
| Elbretornis - Late Cretaceous, 70 Ma |
| Elegestolepis - Late Silurian |
| Elginerpeton - Late Devonian, 375 Ma |
| Elginia - Changhsingian, 254-252 Ma |
| Elliotherium - Upper Triassic |
| Elliotsmithia - Late Permian |
| Elmisaurus - Late Cretaceous, 70 Ma |
| Elrhazosaurus - Early Cretaceous, approximately 115 Ma |
| Emausaurus - Early Jurassic, Toarcian |
| Embasaurus - Early Cretaceous |
| Embolotherium - Late Eocene |
| Embrithosaurus - Capitanian, 265-260 Ma |
| Emeroleter - Late Permian, Wuchiapingian |
| Emydochampsa - Unavailable |
| Emydops - Middle - Late Permian |
| Emydorhinus - Unavailable |
| Emydorhynchus - Unavailable |
| Emyduranus - Unavailable |
| Enaliarctos - Late Oligocene - Early Miocene, 24-22 Ma |
| Enantiophoenix - Late Cretaceous, 95 Ma |
| Enchodus - Late Cretaceous-Eocene |
| Endothiodon - Wuchiapingian, 259-254 Ma |
| Enigmosaurus - Late Cretaceous, 93 Ma |
| Ennatosaurus - 265-254 Ma |
| Entelodon - 37.2-28.4 Ma Houldjinian-Rupelian |
| Entelognathus - Late Ludlow |
| Eoabelisaurus - Middle Jurassic |
| Eoalulavis - Early Cretaceous, 125 Ma |
| Eoarctops - Middle Permian, Capitanian |
| Eoazhdarcho - Early Cretaceous, 120 Ma |
| Eobasileus - Late Eocene |
| Eobothus - Middle Eocene |
| Eocaecilia - Early Jurassic, 199.6-175.6 Ma |
| Eocaiman - Early Paleocene-Late Miocene (pre-Tiupampan-Montehermosan)~66-5.3 Ma |
| Eocarcharia - Early Cretaceous, 112 Ma |
| Eocasea - Late Carboniferous, 300 Ma |
| Eocetus - Middle Eocene |
| Eoconfuciusornis - Early Cretaceous, 131 Ma |
| Eocursor - Late Triassic or Early Jurassic |
| Eocyclotosaurus - Middle Triassic |
| Eodortoka - Aptian of the Cretaceous |
| Eodromaeus - Late Triassic, 231.4-229 Ma |
| Eoentelodon - Middle Eocene |
| Eofelis - Eocene-Miocene |
| Eogyrinus - Moscovian 311.7-306.5 Ma |
| Eoherpeton - Early CarboniferousVisean-Namurian |
| Eohupehsuchus - Lower Triassic, 247.2 Ma |
| Eohyosaurus - Middle Triassic, 246 Ma |
| Eolambia - Late Cretaceous, 96.7 Ma |
| Eomaia - Early Cretaceous, 125 Ma |
| Eomamenchisaurus - Middle Jurassic |
| Eomanis - Early Eocene |
| Eomysticetus - Chattian |
| Eonatator - Late Cretaceous 84-72.1 Ma |
| Eoneustes - Bajocian - Bathonian, 168.5-167 Ma |
| Eoplesiosaurus - Early Jurassic, 199.6-198 Ma |
| Eopolycotylus - Unavailable |
| Eopteranodon - Early Cretaceous, 124.6 Ma |
| Eoraptor - Late Triassic, 231-228 Ma |
| Eosimops - Middle Permian |
| Eosinopteryx - Late Jurassic, 160 Ma |
| Eosipterus - Early Cretaceous, 124.6 Ma |
| Eothyris - Early Permian,[1] Artinskian |
| Eotitanosuchus - Wordian, 267 Ma |
| Eotrachodon - Late Cretaceous, 86-83.6 Ma |
| Eotriceratops - Late Cretaceous, 68-67.6 Ma |
| Eotyrannus - Early Cretaceous, 130 Ma |
| Eousdryosaurus - Late Jurassic, 152 Ma |
| Epachthosaurus - Late Cretaceous, 95-90 Ma |
| Epichirostenotes - Late Cretaceous, 72 Ma |
| Epicyon - Early Miocene-Late Miocene |
| Epidexipteryx - Oxfordian, 160 Ma |
| Epihippus - 46.2-38.0 Ma Early Uintan to Duchesnean[1] |
| Equijubus - Early Cretaceous, 125 Ma |
| Equus simplicidens - Middle Pliocene to Late Pleistocene |
| Erectopus - 112 Ma |
| Eremiasaurus - Late Cretaceous |
| Eremotherium - Late Pliocene - Early Holocene, 4.9-0.011 Ma |
| Eretmorhipis - Early Triassic |
| Ericiolacerta - Early Triassic |
| Eriphostoma - Middle Permian, Capitanian |
| Erketu - Early Cretaceous |
| Erlianomys - Early Eocene |
| Erliansaurus - Late Cretaceous, c 85 ma. |
| Erlikosaurus - Late Cretaceous, 90 Ma |
| Eromangasaurus - Early Cretaceous, 103 Ma |
| Erpetonyx - Pennsylvanian, 303.7-289.9 Ma |
| Erpetosuchus - Late Triassic Carnian-Norian |
| Eryops - Pennsylvanian-Cisuralian, 300-295 Ma |
| Erythrosuchus - 250-230 Ma Early to Middle Triassic |
| Eshanosaurus - Early Jurassic, 196 Ma |
| Estemmenosuchus - Middle Permian, 267 Ma |
| Estesia - Late Cretaceous |
| Euchambersia - Cistecephalus Assemblage Zone (Wuchiapingian), 256-255 Ma |
| Euclastes - Unavailable |
| Eucnemesaurus - Late Triassic, 228 Ma |
| Eucoelophysis - Late Triassic, 228-208 Ma |
| Eucritta - Visean 345.3-330.9 Ma |
| Eucyon - Late Miocene- Late Pliocene, 10.3-3.6 Ma |
| Eudibamus - Early Permian, 284-279.5 Ma |
| Eudimorphodon - Late Triassic, 210-203 Ma |
| Euhelopus - Early Cretaceous, 129-113 Ma |
| Eumetabolodon - Early-Middle Triassic, 251-244 Ma |
| Eunotosaurus - Middle Permian, 265.8-251 Ma |
| Euoplocephalus - Late Cretaceous, 76.4-75.6 Ma |
| Euparkeria - Middle Triassic |
| Eurazhdarcho - Late Cretaceous |
| Eurhinodelphis - Middle Miocene-Late Miocene |
| Eurhinosaurus - Early Jurassic, 183-175 Ma |
| Euroamphicyon - Miocene |
| Europasaurus - Late Jurassic, 154 Ma |
| Europejara - Early Cretaceous |
| Eurotamandua - Early to Middle Eocene |
| Eurychororhinus - Unavailable |
| Euskelosaurus - Late Triassic |
| Eusmilus - Late Eocene to Early Oligocene, 37.2-28.4 Ma |
| Eusthenopteron - Late Devonian, 385 Ma |
| Eustreptospondylus - Middle Jurassic, 162 Ma |
| Exaeretodon - Middle Triassic-Late Triassic |
| Excalibosaurus - Early Jurassic, 196.5-189.6 Ma[1] |
| F (24 species) |
| Fabrosaurus - Early Jurassic, 199-189 Ma |
| Fadenia - Permian |
| Falcarius - Early Cretaceous, 126 Ma |
| Falcatus - 335-318 Ma Middle Visean - Late Serpukhovian |
| Fasolasuchus - Late Triassic, 217-215 Ma |
| Faxinalipterus - Late Triassic (Carnian-Norian), 220-215 Ma |
| Fedexia - Late Pennsylvanian, 300 Ma |
| Feilongus - Early Cretaceous, 124.6 Ma |
| Ferganasaurus - Unavailable |
| Ferganocephale - Middle Jurassic, 162 Ma |
| Fodonyx - Middle Triassic, Anisian |
| Fosterovenator - Late Jurassic, 155-147 Ma |
| Foxemys - Unavailable |
| Francosuchus - Late Triassic, 231-228 Ma |
| Fresnosaurus - Late Cretaceous, 70-66 Ma |
| Fruitadens - Late Jurassic, 150 Ma |
| Fruitafossor - Late Jurassic, Kimmeridgian-Tithonian |
| Fukuiraptor - Early Cretaceous, 128 Ma |
| Fukuisaurus - Early Cretaceous, Barremian |
| Fukuititan - Early Cretaceous, Barremian |
| Fukuivenator - Early Cretaceous, 120 Ma |
| Fulgurotherium - Early Cretaceous |
| Fusuisaurus - Early Cretaceous |
| Futalognkosaurus - Late Cretaceous, 87 Ma |
| G (103 species) |
| Galadi - Oligocene - Miocene |
| Galeamopus - Late Jurassic, 155-152.9 Ma |
| Galechirus - Late Permian |
| Galeops - Permian |
| Galepus - Permian |
| Galesaurus - Induan-Olenekian, 252.17-247.2 Ma |
| Galesuchus - Middle Permian, Capitanian |
| Gallardosaurus - Oxfordian |
| Gallimimus - Late Cretaceous, 70 Ma |
| Galveosaurus - Barremian 130 Ma |
| Gamerabaena - Late Cretaceous |
| Gandakasia - Early Eocene, 49 Ma |
| Ganzhousaurus - Late Cretaceous, Maastrichtian |
| Gargoyleosaurus - Late Jurassic, 154-150 Ma |
| Garjainia - Early Triassic, Olenekian |
| Garudimimus - Late Cretaceous,[1] 98-83 Ma |
| Gasosaurus - Middle Jurassic, 164 Ma |
| Gasparinisaura - 85 Ma |
| Gasparinisuchus - Late Cretaceous, 85.8-77.5 Ma |
| Gastonia - Early Cretaceous, 126 Ma |
| Gastornis - Paleocene - Eocene, 56-45 Ma |
| Gaviacetus - Middle Eocene |
| Gegepterus - Early Cretaceous, 124.6 Ma |
| Geikia - Late Permian-Early Triassic |
| Geminiraptor - Early Cretaceous, 130 Ma |
| Gemuendina - Emsian |
| Genyodectes - Early Cretaceous, 112 Ma |
| Genyornis - Late Pleistocene |
| Georgiacetus - Middle Eocene |
| Geosaurus - Late Jurassic-Early Cretaceous, 150-136 Ma |
| Gephyrosaurus - Late Triassic-Early Jurassic, Rhaetian-195 |
| Gephyrostegus - Late Carboniferous |
| Geranosaurus - Early Jurassic |
| Germanodactylus - Late Jurassic |
| Gerrothorax - Ladinian-Rhaetian (Middle-Late Triassic) |
| Giganotosaurus - Late Cretaceous, 97 Ma |
| Gigantophis - Priabonian, 37-35 Ma |
| Gigantopithecus - Late Miocene to Mid Pleistocene~9-0.1 Ma |
| Gigantoraptor - Late Cretaceous, 85 Ma |
| Gigantosaurus - Unavailable |
| Gigantspinosaurus - Late Jurassic |
| Gilchristosuchus - Late Cretaceous |
| Gillicus - 100 Ma Late Cretaceous |
| Gilmoreosaurus - Early - Late Cretaceous, 70 Ma |
| Ginsburgsmilus - Miocene |
| Giraffatitan - Late Jurassic, 150-145 Ma |
| Glacialisaurus - Early Jurassic 189-183 Ma |
| Gladiobranchus - Lochkovian of the Devonian |
| Gladioserratus - Valanginian-Danian |
| Gladocephaloideus - Early Cretaceous, 121 Ma |
| Glanosuchus - Late Permian |
| Glishades - Late Cretaceous, 74.5 Ma |
| Globidens - Late Cretaceous, 84.9.043 Ma |
| Glochinodontoides - Unavailable |
| Glossotherium - Late Pliocene to Early Holocene, 2.5-0.010 Ma |
| Glyptodon - Pleistocene 2.500-0.011 Ma |
| Gnathabelodon - Middle Miocene-Late Miocene |
| Gnathosaurus - Late Jurassic |
| Gnatusuchus - Mid Miocene (Laventan)~13 Ma |
| Gobiatherium - Middle Eocene |
| Gobiceratops - Late Cretaceous |
| Gobiconodon - Middle Jurassic-Late Cretaceous 166-94 Ma |
| Gobipteryx - Late Cretaceous, 72 Ma |
| Gobisaurus - Late Cretaceous, 92 Ma |
| Gobititan - Barremian, 129-125 Ma |
| Gobivenator - Late Cretaceous, 72 Ma |
| Godavarisaurus - Early Jurassic [1] |
| Gogonasus - Late Devonian |
| Gojirasaurus - Late Triassic, 210 Ma |
| Gomphodontosuchus - Late Triassic |
| Gomphotherium - Early Miocene-Early Pleistocene |
| Gondwanatitan - Late Cretaceous,70 Ma |
| Gongbusaurus - Late Jurassic, 160-157 Ma |
| Gongxianosaurus - Early Jurassic 183-174 Ma |
| Gooloogongia - Late Devonian |
| Gorgonops - Wuchiapingian, 260-254 Ma |
| Gorgosaurus - Late Cretaceous, 76.6-75.1 Ma |
| Goronyosaurus - Maastrichtian |
| Goupilictis - Unavailable |
| Goyocephale - Late Cretaceous, 76 Ma |
| Graciliceratops - Late Cretaceous, 90 Ma |
| Graciliraptor - Early Cretaceous, 125 Ma |
| Gracilisuchus - Middle Triassic,[1] 236-234 Ma |
| Gracilocyon - Early Eocene |
| Greererpeton - Visean 345.3-328.3 Ma |
| Griphodon - Paleocene-Oligocene |
| Griphognathus - Late Devonian |
| Grippia - Early Triassic - Mid Triassic, 235 Ma |
| Groenlandaspis - Late Devonian |
| Gryphoceratops - Late Cretaceous, 83.5 Ma |
| Gryponyx - Lower Jurassic Hettangian-Sinemurian |
| Gryposaurus - Late Cretaceous, 83-74 Ma |
| Gryposuchus - Mid Miocene-Late Pleistocene (Friasian-Lujanian)~15.97-0.012 Ma |
| Guaibasaurus - Late Triassic, 216.5-212 Ma |
| Guangxicyon - 37-33 Ma Late Eocene |
| Guanlong - Late Jurassic, 160 Ma |
| Guidraco - Early Cretaceous, 120 Ma |
| Guiomys - Mid Miocene (Laventan)~13.8-11.8 Ma |
| Guiyu - Late Silurian, 419 Ma |
| Gwawinapterus - Late Cretaceous, 75 Ma |
| Gwyneddosaurus - Late Triassic |
| Gyposaurus - Early Jurassic |
| Gyroptychius - Mid Devonian |
| H (107 species) |
| Haasiasaurus - 100 Ma |
| Hadrocodium - Early Jurassic, 195 Ma |
| Hadropithecus - Unavailable |
| Hadrosaurus - Late Cretaceous, 79.5 Ma |
| Haestasaurus - Early Cretaceous, 140 Ma |
| Hagryphus - Late Cretaceous, 75.95 Ma |
| Haikouichthys - 535-520 Ma |
| Hainosaurus - Late Cretaceous, 70.6-68 Ma |
| Halisaurus - Late Cretaceous 86.3 Ma |
| Halticosaurus - Late Triassic, 208 Ma |
| Hanssuesia - Late Cretaceous, 77.5-75 Ma |
| Haopterus - Early Cretaceous, 124.6 Ma |
| Hapalops - Early-Late Miocene (Santacrucian-Huayquerian)~17.5-7.246 Ma |
| Haplocanthosaurus - Late Jurassic, 155-152 Ma |
| Haplocheirus - Late Jurassic, 160 Ma |
| Haplocyon - Unavailable |
| Haplocyonoides - 20-16.9 Ma Late Eocene |
| Haplocyonopsis - Unavailable |
| Haptodus - Late Carboniferous - Early Permian, 299-296.4 Ma |
| Haramiyavia - Unavailable |
| Harpactognathus - Late Jurassic |
| Harpagophagus - Oligocene |
| Harpagornis - Late Pleistocene-Holocene |
| Harpymimus - Early Cretaceous, 130 Ma |
| Hassiacosuchus - Eocene |
| Hatzegopteryx - Maastrichtian, 66 Ma |
| Hauffiopteryx - Early Jurassic, 182.7-181.8 Ma |
| Hauffiosaurus - Early Jurassic, 182.7-180.7 Ma |
| Haughtoniana - Unavailable |
| Heishanobaatar - Early Cretaceous |
| Heleosaurus - Middle Permian, 270-290 Ma |
| Helicoprion - Cisuralian-Guadalupian |
| Heliobatis - Early Eocene |
| Helioceratops - Middle Cretaceous |
| Heliopithecus - Miocene16 Ma |
| Helveticosaurus - Middle Triassic, 242 Ma |
| Hemicyclaspis - Early Devonian |
| Hemicyon - Early Miocene-Late Miocene |
| Hemipristis - Middle Eocene-Recent[1] |
| Henodus - Late Triassic, 228-220 Ma |
| Heptasuchus - Middle - Late Triassic, 238-230 Ma |
| Herbstosaurus - Late Jurassic, 150 Ma |
| Herpetoskylax - Late Permian |
| Herrerasaurus - Late Triassic, 231.4 Ma |
| Hesperocyon - Late Eocene-Early Oligocene |
| Hesperornis - Late Cretaceous, 83.5-78 Ma |
| Hesperosaurus - Late Jurassic, 156 Ma |
| Heterodontosaurus - Early Jurassic, 200-190 Ma |
| Hexatarsostinus - Rhaetian - Hettangian |
| Hexinlusaurus - Middle Jurassic, Bajocian |
| Heyuannia - Late Cretaceous, 70 Ma |
| Himalayacetus - Early Eocene, 53.5 Ma |
| Himalayasaurus - Late Triassic, 215.56-212.0 Ma[1] |
| Hipparion - Early Miocene to Pleistocene,[1] 23-0.781 Ma |
| Hippidion - Pliocene-Late Pleistocene (Montehermosan-Lujanian & Blancan)~5.332-0.009 Ma |
| Hippodraco - Early Cretaceous, 124 Ma |
| Hipposaurus - Capitanian, 262-260 Ma |
| Histriasaurus - Early Cretaceous |
| Hofmeyria - Unavailable |
| Holoptychius - Late Devonian-Mississippian~383-318 Ma |
| Homalocephale - Late Cretaceous, 80 Ma |
| Homalodotherium - Mid Miocene (Friasian)~16.3-15.5 Ma |
| Homodontosaurus - Late Permian |
| Homotherium - Early Pliocene to Late Pleistocene, 4-0.012 Ma [1] |
| Hongshanopterus - Early Cretaceous |
| Hongshanornis - Early Cretaceous, 124.6-122 Ma |
| Hoplitosaurus - Early Cretaceous, 130 Ma |
| Hoplophoneus - Late Eocene to Early Oligocene 38-33.3 Ma |
| Horshamosaurus - Barremian Cretaceous |
| Hovasaurus - Changhsingian - Induan 253.8-249.7 Ma |
| Howesia - Middle Triassic, 246 Ma |
| Huabeisaurus - Late Cretaceous, 95-72 Ma |
| Huanansaurus - Late Cretaceous, 72 Ma |
| Huanghetitan - Early Cretaceous |
| Huangshanlong - Middle Jurassic |
| Huanhepterus - Late Jurassic |
| Huaxiagnathus - Early Cretaceous, 125 Ma |
| Huayangosaurus - Middle Jurassic, 165 Ma |
| Hudiesaurus - Late Jurassic |
| Hudsonelpidia - Late Triassic, 210 Ma |
| Huehuecanauhtlus - Late Cretaceous, Santonian |
| Hulitherium - Pleistocene |
| Hulsanpes - Late Cretaceous, 70 Ma |
| Hungarobatrachus - Santonian |
| Hungarosaurus - Late Cretaceous, 85 Ma |
| Hutegotherium - Middle Jurassic, 165 Ma |
| Hyaenodon - Late Eocene to Early Miocene, 42-15.9 Ma |
| Hybodus - Late Permian-Late Cretaceous, 260.0 Ma |
| Hydrodamalis - late Pliocene to Recent, 3.6-0 Ma |
| Hydrotherosaurus - Late Cretaceous, 70-66 Ma |
| Hylaeosaurus - Early Cretaceous, 140-136 Ma |
| Hylonomus - Pennsylvanian, 312 Ma |
| Hyneria - 360 Ma (Famennian)[1] |
| Hynerpeton - 360 Ma Late Devonian |
| Hyotherium - Unavailable |
| Hypacrosaurus - Late Cretaceous, 75-67 Ma |
| Hypercoryphodon - Late Eocene, 37-34 Ma |
| Hyperodapedon - Late Triassic, 231-216 Ma |
| Hypohippus - Unavailable |
| Hypselosaurus - Late Cretaceous, 70 Ma |
| Hypselospinus - Early Cretaceous, 140 Ma |
| Hypsidoris - Middle Eocene |
| Hypsocormus - Middle Jurassic-Late Jurassic |
| Hypsognathus - Late Triassic |
| Hyrachyus - Eocene |
| Hyracodon - Middle Eocene-Late Oligocene |
| Hyracotherium - 55-45 Ma |
| I (46 species) |
| Ianthasaurus - Late Carboniferous, 302 Ma |
| Iberomesornis - Early Cretaceous, 125 Ma |
| Iberospondylus - Carboniferous |
| Icaronycteris - Early Eocene |
| Ichibengops - Late Permian |
| Ichthyodectes - Unavailable |
| Ichthyornis - Late Cretaceous,[1] 93-83.5 Ma |
| Ichthyosaurus - Late Triassic - Early Jurassic, Rhaetian-Pliensbachian |
| Ichthyostega - Late Devonian, 365-360 Ma |
| Ichthyovenator - Early Cretaceous |
| Ictidognathus - Late Permian |
| Ictidopsis - Unavailable |
| Ictidorhinus - Late Permian |
| Ictidostoma - Unavailable |
| Ictidosuchoides - Late Permian - Early Triassic |
| Ictidosuchus - Unavailable |
| Ictiocyon - Miocene |
| Ictitherium - Middle Miocene-Early Pliocene |
| Idelesaurus - Late Permian |
| Igdamanosaurus - Late Cretaceous |
| Iguanacolossus - Lower Cretaceous, 130 Ma |
| Iguanodon - Early Cretaceous, 126-125 Ma |
| Ikrandraco - Early Cretaceous, 120 Ma |
| Iliosuchus - Middle Jurassic 168.3-166.1 Ma |
| Ilokelesia - Late Cretaceous, 95 Ma |
| Incisivosaurus - Early Cretaceous, 123.2 Ma |
| Indarctos - Miocene |
| Indocetus - Middle Eocene |
| Indohyus - Middle Eocene |
| Indosaurus - Late Cretaceous, 69 Ma |
| Indosuchus - Late Cretaceous, 70 Ma |
| Iniopteryx - Pennsylvanian |
| Inostrancevia - Wuchiapingian, 260-254 Ma |
| Irajatherium - Late Triassic |
| Iranotherium - Late Miocene |
| Irritator - Early Cretaceous, 110 Ma |
| Isanosaurus - Late Triassic 214-201 Ma |
| Ischyodus - 176-23 Ma Middle Jurassic to Miocene |
| Ischyrocyon - Miocene |
| Isfjordosaurus - Early Triassic |
| Isisaurus - Late Cretaceous, 70 Ma |
| Isisfordia - Early-Late Cretaceous, Albian-Cenomanian |
| Istiodactylus - Early Cretaceous, 125-120 Ma |
| Itasuchus - Late Cretaceous, 70.6 Ma |
| Itemirus - Late Cretaceous, 91 Ma |
| Iuticosaurus - Early Cretaceous |
| J (27 species) |
| Jamoytius - Llandovery |
| Janenschia - 155-145 Ma Late Jurassic |
| Janjucetus - Late Oligocene |
| Jaxartosaurus - Late Cretaceous, 84 Ma |
| Jaxtasuchus - Middle Triassic |
| Jeholodens - Early Cretaceous, 125 Ma |
| Jeholopterus - Bathonian to Oxfordian,[1] 164 Ma |
| Jeholornis - Early Cretaceous, 122-120 Ma |
| Jeholosaurus - Early Cretaceous, 130 Ma |
| Jeyawati - Late Cretaceous, 91 Ma |
| Jianchangnathus - Middle Jurassic, 160 Ma |
| Jiangjunosaurus - Late Jurassic, 160 Ma |
| Jiangshanosaurus - Early Cretaceous, 105 Ma |
| Jidapterus - Early Cretaceous, 120 Ma |
| Jinanichthys - Early Cretaceous |
| Jinfengopteryx - Early Cretaceous, 122 Ma |
| Jingshanosaurus - Early Jurassic |
| Jintasaurus - Early Cretaceous |
| Jiutaisaurus - Aptian-Cenomanian |
| Jobaria - Middle Jurassic, 167-161 Ma |
| Jonkeria - Capitanian, 265-260 Ma |
| Josephoartigasia - Early-Late Pliocene (Chapadmalalan)~4-3 Ma |
| Jubbulpuria - Late Cretaceous, 70 Ma |
| Judiceratops - Late Cretaceous, 78-77.5 Ma |
| Juramaia - Late Jurassic, 160.89-160.25 Ma |
| Juratyrant - Late Jurassic, 149 Ma |
| Juravenator - Late Jurassic, 151.5 Ma |
| K (83 species) |
| Kaatedocus - Late Jurassic, 155 Ma |
| Kabirmys - Late Eocene |
| Kaijiangosaurus - Middle Jurassic |
| Kaiwhekea - Late Cretaceous, 70-69 Ma |
| Kakuru - Early Cretaceous |
| Kalimantsia - 23.03-5.33 Ma Miocene |
| Kamagorgon - Permian, 270.6-260.4 Ma |
| Kangnasaurus - Early Cretaceous |
| Kannemeyeria - Early Triassic |
| Kapes - Lower - Middle Triassic |
| Kaprosuchus - Late Cretaceous, 95 Ma |
| Karaurus - Late Jurassic Oxfordian-Kimmeridgian |
| Karongasaurus - Early Cretaceous |
| Kataria - Unavailable |
| Katumbia - Late Permian |
| Kayentachelys - Early Jurassic 196.5-183.0 Ma |
| Kayentasuchus - Early Jurassic |
| Kayentatherium - Early Jurassic |
| Kayentavenator - Early Jurassic, 189 Ma |
| Keichousaurus - late Early-early Late Triassic, Olenekian-Carnian |
| Kekenodon - Chattian of the Oligocene |
| Kelenken - Miocene, 15 Ma |
| Kelmayisaurus - Early Cretaceous |
| Kelyophis - Late Cretaceous, 70 Ma |
| Kemkemia - Cenomanian |
| Kentrosaurus - Late Jurassic, 155-150 Ma |
| Kenyapithecus - middle Miocene |
| Kepodactylus - Late Jurassic |
| Keratocephalus - Capitanian |
| Kerberosaurus - Late Cretaceous, 66 Ma |
| Khaan - Late Cretaceous, 84-75 Ma |
| Kharodacetus - Middle Eocene, 42 Ma |
| Khetranisaurus - Late Cretaceous, Maastrichtian |
| Khoratosuchus - Early Cretaceous, Aptian-Albian |
| Khoratpithecus - Unavailable |
| Khunnuchelys - Turonian to Campanian, 91-75 Ma |
| Kielanobaatar - Early Cretaceous |
| Kileskus - Middle Jurassic, 165 Ma |
| Kimbetopsalis - - Middle Puercan, 65 Ma |
| Kimmerosaurus - 150.8-145.5 Ma Late Jurassic, Tithonian |
| Kinnareemimus - Early Cretaceous, Valanginian-Hauterivian |
| Kitchinganomodon - Late Permian |
| Klamelisaurus - Middle Jurassic, 174-163 Ma |
| Kleskunsaurus - Late Cretaceous |
| Knightia - Early Eocene |
| Kogiopsis - Miocene |
| Koilamasuchus - Early Triassic |
| Kol - Late Cretaceous, 75 Ma |
| Kollikodon - Early Cretaceous |
| Komba - Early Miocene-Middle Miocene |
| Kombuisia - Early to Middle Triassic |
| Komensaurus - 100 Ma Late Cretaceous |
| Koolasuchus - Aptian, 120 Ma |
| Koparion - Late Jurassic, 151 Ma |
| Koreaceratops - Early Cretaceous, 103 Ma |
| Koreanosaurus - Late Cretaceous, Santonian-Campanian |
| Koshisaurus - Early Cretaceous, 128 Ma |
| Koskinonodon - Late Triassic, 228-208 Ma |
| Kosmoceratops - Late Cretaceous, 76.4-75.9 Ma |
| Kotasaurus - 196.5-183 Ma Early Jurassic |
| Koumpiodontosuchus - Early Cretaceous |
| Kourisodon - Late Santonian - Late Maastrichtian |
| Kritosaurus - Late Cretaceous, 74.5 Ma |
| Kronosaurus - Early Cretaceous, 125-99 Ma |
| Kryostega - Triassic |
| Kryptops - Early Cretaceous, 110 Ma |
| Kubanochoerus - Miocene |
| Kukufeldia - Early Cretaceous, 140-136 Ma |
| Kulceratops - Early Cretaceous, Albian |
| Kulindadromeus - Middle Jurassic to Late Jurassic, 169-144 Ma |
| Kundurosaurus - Late Cretaceous, 67 Ma |
| Kunmingosaurus - Early Jurassic |
| Kunpengopterus - Middle-Late Jurassic, 154 Ma |
| Kuntinaru - Late Oligocene (Deseadan)~26.0 Ma |
| Kuri - Unavailable |
| Kurmademys - Late Cretaceous 70.6 Ma |
| Kuszholia - Late Cretaceous, 85 Ma |
| Kutchicetus - Middle Eocene, 46-43 Ma |
| Kutchisiren - Miocene |
| Kuttanacaiman - Middle Miocene (Friasian-Mayoan)~15.97-11.608 Ma |
| Kwazulusaurus - Late Permian |
| Kyasuchus - Early Cretaceous |
| Kyrgyzsaurus - Middle-Upper Triassic, 230-225 Ma |
| L (119 species) |
| Labidiosuchus - Late Cretaceous, Maastrichtian |
| Labidosaurikos - Early Permian, 279-272 Ma |
| Labidosaurus - Early Permian |
| Labocania - Late Cretaceous, 73 Ma |
| Laccotriton - Unavailable |
| Lacusovagus - Early Cretaceous, 120 Ma |
| Laganosuchus - 95 Ma Cenomanian |
| Lagerpeton - Late Triassic, 236-234 Ma |
| Lagosuchus - Middle Triassic, 236-234 Ma |
| Lamaceratops - Late Cretaceous |
| Lambeosaurus - Late Cretaceous, 76-75 Ma |
| Lamiasaurus - Capitanian |
| Lamplughsaura - Early Jurassic |
| Langobardisaurus - Late Triassic, 228-201 Ma |
| Langstonia - Middle Miocene, 13-12 Ma |
| Lanthanostegus - Unavailable |
| Lanthanosuchus - Unavailable |
| Lanzhousaurus - Lower Cretaceous, 130 Ma |
| Laopteryx - Late Jurassic |
| Laosaurus - Upper Jurassic, Upper Cretaceous |
| Lapampasaurus - Late Cretaceous, 76-70 Ma |
| Laplatasaurus - Late Cretaceous, Campanian |
| Lapparentosaurus - Middle Jurassic |
| Laquintasaura - 200.91 Ma Hettangian |
| Larachelus - Early Cretaceous |
| Lariosaurus - Middle Triassic, Anisian-Ladinian |
| Lasasaurus - Early Triassic |
| Latirhinus - Late Cretaceous, 72.5 Ma |
| Latoplatecarpus - Late Cretaceous, 80.5-79 Ma |
| Lazarussuchus - Late Paleocene - Early Miocene, 60-20 Ma |
| Leaellynasaura - Early Cretaceous,[1]118-110 Ma |
| Leedsichthys - Middle Jurassic |
| Leidyosuchus - Campanian |
| Leinkupal - Early Cretaceous, 136.4 Ma |
| Lemurosaurus - Late Permian |
| Leonerasaurus - Early Jurassic, 199 Ma |
| Lepidotes - Toarcian - Cenomanian, 180.3-94.0 Ma |
| Leptalestes - Unavailable |
| Leptictidium - Middle Eocene, 50-35 Ma |
| Leptoceratops - Late Cretaceous, 66.8 Ma |
| Leptochamops - Santonian to Maastrichtian of the Cretaceous |
| Leptolepides - Early Toarcian[1] |
| Leptolepis - 242.0-112.6 Ma Middle Triassic to Early Cretaceous[1] |
| Leptonectes - Late Triassic - Early Jurassic, Rhaetian-Pliensbachian |
| Leptopleuron - Late Triassic, 237-201 Ma |
| Leptorhynchos - Late Cretaceous, 75 Ma |
| Leptosuchus - Late Triassic |
| Leshansaurus - Bathonian-Callovian |
| Lesothosaurus - Early Jurassic, 199-189 Ma |
| Lessemsaurus - Late Triassic, 228-204 Ma |
| Lestobradys - Late Miocene (Mayoan-Montehermosan)~11.6-5.4 Ma |
| Levnesovia - Late Cretaceous |
| Lewisuchus - Middle Triassic, 236-234 Ma |
| Lexovisaurus - Middle - Late Jurassic, 164.7 Ma |
| Leyesaurus - Lower Jurassic |
| Liaoceratops - Early Cretaceous, 130 Ma |
| Liaochelys - Early Cretaceous |
| Liaoconodon - Aptian, 120 Ma |
| Liaoningopterus - Early Cretaceous, 120 Ma |
| Liaoningornis - Early Cretaceous, 124.6 Ma |
| Liaoningosaurus - Early Cretaceous, 122 Ma |
| Liaoxipterus - Early Cretaceous, 120 Ma |
| Libycosaurus - Middle Miocene to Late Miocene |
| Libycosuchus - Late Cretaceous |
| Ligabueino - Early Cretaceous, 125 Ma |
| Ligabuesaurus - Early Cretaceous |
| Liliensternus - Late Triassic, 228-201 Ma |
| Limaysaurus - Aptian-Albian Early Cretaceous |
| Limnofregata - Early Eocene |
| Limnoscelis - Early Permian |
| Limusaurus - Oxfordian, 161-156 Ma |
| Linhenykus - Late Cretaceous |
| Linheraptor - Late Cretaceous, Campanian |
| Linhevenator - Late Cretaceous, 75 Ma |
| Liodon - Late Cretaceous |
| Liopleurodon - Middle-Late Jurassic, 160-155 Ma |
| Lisboasaurus - Late Jurassic- Early Cretaceous |
| Litargosuchus - Early Jurassic |
| Liubangosaurus - Early Cretaceous |
| Livyatan - Tortonian (Chasicoan)~9.9-8.9 Ma (possible Zanclean occurrence) |
| Llanocetus - Priabonian |
| Lobalopex - Late Permian |
| Lonchidion - Triassic |
| Lonchodectes - Late Cretaceous, 94 Ma |
| Lonchognathosaurus - Early Cretaceous |
| Longchengpterus - Early Cretaceous, 120 Ma |
| Longicrusavis - Early Cretaceous, 122 Ma |
| Longisquama - Middle or Late Triassic, 235 Ma |
| Lophorhinus - Late Permian |
| Lophorhothon - Late Cretaceous, ~80 Ma |
| Lophostropheus - Late Triassic/Early Jurassic, 200 Ma |
| Loricatosaurus - Middle Jurassic |
| Loricosaurus - 71 Ma |
| Lorosuchus - Paleocene (Peligran-Riochican)~61.7-55.8 Ma |
| Losillasaurus - Late Jurassic-Early Cretaceous |
| Lotosaurus - Middle Triassic, Anisian |
| Lourinhanosaurus - Late Jurassic, 150 Ma |
| Lourinhasaurus - Late Jurassic 153-150 Ma |
| Luanchuanraptor - Late Cretaceous |
| Ludodactylus - Early Cretaceous, 112 Ma |
| Luetkesaurus - Late Cretaceous |
| Lufengosaurus - Early Jurassic 190 Ma |
| Lufengpithecus - Unavailable |
| Lukousaurus - Early Jurassic 196.5 - 189.5 Ma |
| Luoyanggia - Early Cretaceous, Aptian-Albian |
| Lurdusaurus - Early Cretaceous, 121-112 Ma |
| Lusitanisuchus - 155-140 Ma |
| Lusitanosaurus - Early Jurassic |
| Lusonectes - Early Jurassic, Toarcian |
| Lusotitan - Late Jurassic, 152 Ma |
| Lycaenodon - Late Permian |
| Lycaenops - Middle - Late Permian 270.6-251 Ma |
| Lycideops - Late Permian |
| Lycophocyon - Middle Eocene, 43-40 Ma |
| Lycoptera - Upper Jurassic-Lower Cretaceous |
| Lycorhinus - Early Jurassic, 197 Ma |
| Lycosuchus - Middle Permian, 265-260 Ma |
| Lystrosaurus - Late Permian-Early Triassic, 255-250 Ma |
| Lythronax - Late Cretaceous, 80 Ma |
| M (169 species) |
| Megalodon - Early Miocene-Late Pliocene, ~23-2.6 Ma |
| Machaeroides - Eocene |
| Machairasaurus - Late Cretaceous |
| Machairodus - Late Miocene to the Middle Pleistocene |
| Macrauchenia - Late Miocene-Late Pleistocene (Huayquerian-Lujanian)~7-0.01 Ma |
| Macrocnemus - Middle Triassic, 245-228 Ma |
| Macroleter - Late Permian, 264 Ma |
| Macromerion - Late Carboniferous 304.2-299 Ma |
| Macroplata - 199-195 Ma Early Jurassic |
| Macropoma - Late Cretaceous, 70 Ma |
| Macrurosaurus - Early Cretaceous |
| Madtsoia - Coniacian-Late Eocene (Casamayoran)~89.3-37.2 Ma |
| Madygenerpeton - Middle/Upper Triassic |
| Madysaurus - Middle Triassic |
| Magericyon - Late Miocene 10-9 Ma |
| Magnapaulia - Late Cretaceous, 73.6-73 Ma |
| Magnirostris - Unavailable |
| Magnosaurus - Middle Jurassic |
| Magyarosaurus - Late Cretaceous, 70 Ma |
| Mahajangasuchus - Upper Cretaceous, 70 Ma |
| Mahakala - Late Cretaceous, 75 Ma |
| Maiacetus - Middle Eocene |
| Maiasaura - Late Cretaceous, 76.7 Ma |
| Majungasaurus - Late Cretaceous, 70 Ma |
| Makaracetus - Early Middle Eocene |
| Malarguesaurus - Turonian-Coniacian~91-88 Ma |
| Malasaurus - Late Permian |
| Malawisaurus - Aptian |
| Maleevus - Late Cretaceous, 90 Ma |
| Malerisaurus - Late Triassic, 228-215 Ma |
| Mamenchisaurus - Late Jurassic, 160-145 Ma |
| Mammacyon - Oligocene-Miocene |
| Mammalodon - Late Oligocene |
| Mammut - Early Oligocene through to the end of the Pleistocene/early Holocene |
| Mammuthus africanavus - Early Pliocene to Early Pleistocene |
| Mammuthus columbi - Mid Pleistocene-Early Holocene, 1.5-0.011 Ma |
| Mammuthus exilis - Late Pleistocene to Early Holocene, 0.06-0.011 Ma |
| Mammuthus meridionalis - 2.5-1.5 Ma Pleistocene |
| Mammuthus primigenius - Pleistocene - Early Holocene 0.15-0.004 Ma |
| Mammuthus subplanifrons - Early Pliocene |
| Mammuthus trogontherii - Mid Pleistocene |
| Mandageria - Late Devonian |
| Mandschurosaurus - Late Cretaceous, 66 Ma |
| Manidens - Middle Jurassic, 171-167 Ma |
| Mantellisaurus - Early Cretaceous, 125 Ma |
| Maotherium - Early Cretaceous, 124.6 Ma |
| Mapusaurus - Late Cretaceous, 97-93.5 Ma |
| Marasuchus - Late Triassic, 236-234 Ma |
| Maresaurus - Middle Jurassic |
| Mariliasuchus - Late Cretaceous~84.9.0 Ma |
| Marisaurus - Late Cretaceous, Maastrichtian |
| Marshosaurus - Late Jurassic, 155-152 Ma |
| Martharaptor - Lower Cretaceous |
| Martinavis - Late Cretaceous, 75-70 Ma |
| Masiakasaurus - Late Cretaceous, 70 Ma |
| Masracetus - Late Eocene |
| Massaliasuchus - Late Cretaceous, 83.5 Ma |
| Massospondylus - Early Jurassic, 200-183 Ma |
| Mastodonsaurus - Middle Triassic |
| Materpiscis - Late Devonian, 380 Ma |
| Mauicetus - Late Oligocene. 24.2-23.6 Ma |
| Mauisaurus - Late Cretaceous, 77 Ma |
| Mawsonia - Late Cretaceous, 110-95 Ma |
| Maxakalisaurus - Late Cretaceous |
| Medusaceratops - Middle Campanian, 77.5 Ma |
| Megacerops - Late Eocene 38-33.9 Ma |
| Megaladapis - Unavailable |
| Megalampris - Late Oligocene[1] |
| Megalancosaurus - Late Triassic |
| Megaleptictis - Late Eocene |
| Megalictis - Miocene |
| Megaloceros - Late Pliocene to Late Pleistocene, 3-0.008 Ma |
| Megalonyx - late Miocene to Pleistocene, 10.3-0.011 Ma |
| Megaloplax - Emsian to Frasnian |
| Megalosaurus - Middle Jurassic, 166 Ma |
| Megamastax - Late Silurian, 423 Ma |
| Megantereon - Early Pliocene to Middle Pleistocene |
| Megapaloelodus - Late Oligocene - Early Pliocene |
| Megapiranha - Late Miocene |
| Megaraptor - Late Cretaceous,[1] 91-88 Ma |
| Megatherium - Early Pliocene[1] to Early Holocene, 5-0.010 Ma Possible later date of 0.008 Ma |
| Megawhaitsia - 260.5-251.0 Ma |
| Megazostrodon - Late Triassic-Early Jurassic |
| Megistotherium - early Miocene 23.03-11.61 Ma |
| Meherrinia - Late Miocene |
| Meiolania - mid Miocene-Holocene |
| Melanosteus - Late Frasnian[1] |
| Menadon - Middle to Late Triassic |
| Menarana - Late Cretaceous, 70 Ma |
| Mendozahippus - Mid-Late Oligocene (Deseadan)~29-21 Ma |
| Mendozasaurus - Late Cretaceous |
| Mene - 58.7-0 Ma Thanetian to Present[1] |
| Merychippus - Miocene |
| Mesembriornis - Late Miocene-Late Pliocene |
| Mesenosaurus - Late Permian |
| Mesohippus - Middle Eocene - Early Oligocene |
| Mesoleptos - 100 Ma Late Cretaceous |
| Mesonyx - Eocene |
| Mesophryne - Unavailable |
| Mesopropithecus - Unavailable |
| Mesosaurus - Cisuralian, 299-280 Ma |
| Mesosuchus - Middle Triassic, 246 Ma |
| Metaliomys - Late Miocene |
| Metoposaurus - Carnian, 228-216.5 Ma |
| Metriacanthosaurus - Middle Jurassic, 160 Ma |
| Metridiochoerus - Late Pliocene to Early Pleistocene |
| Metriorhynchus - 167-155 Ma Callovian - Kimmeridgian |
| Mexichelys - Late Campanian |
| Meyerasaurus - Early Jurassic, 183-180 Ma |
| Miacis - Late Paleocene-Late Eocene [1] |
| Miadanasuchus - Late Cretaceous |
| Microbrachis - Late Carboniferous, 307.1-302 Ma |
| Microceratus - Late Cretaceous, 90 Ma |
| Microcleidus - Early Jurassic |
| Microcoelus - Late Cretaceous |
| Microgomphodon - Middle Triassic, Olenekian-Anisian |
| Micropachycephalosaurus - Late Cretaceous, 69.5 Ma |
| Microposaurus - Middle-Late Triassic, 247-242 Ma |
| Microraptor - Early Cretaceous, 120 Ma |
| Microurania - Wordian |
| Microvenator - Early Cretaceous, 110 Ma |
| Milleretta - Changhsingian, 252.5-251 Ma |
| Minicynodon - Late Triassic, Carnian-Norian |
| Minmi - Early Cretaceous, 119-113 Ma |
| Minotaurasaurus - Late Cretaceous, 75-70 Ma |
| Miodentosaurus - Late Triassic, 235.0-221.5 Ma |
| Miracinonyx - Late Pliocene to Late Pleistocene 2.6-0.011 Ma |
| Miragaia - Late Jurassic, 150 Ma |
| Mitredon - Late Triassic |
| Mixocetus - Late Miocene, 11.6-10 Ma |
| Mixosaurus - Triassic(Anisian to Ladinian, about 247-242 Mya)[1] |
| Moanasaurus - Late Cretaceous |
| Mochlodon - Late Cretaceous |
| Moeritherium - Late Eocene |
| Moganopterus - Early Cretaceous, 124.5 Ma |
| Mojoceratops - Late Cretaceous, 76.5-75 Ma |
| Mollesaurus - Middle Jurassic, 171.6-170 Ma |
| Mongolepis - Late Silurian |
| Monjurosuchus - Early Cretaceous |
| Monkonosaurus - 150 Ma |
| Monoclonius - Late Cretaceous, 77-74.8 Ma |
| Monolophosaurus - Middle Jurassic, 165 Ma |
| Mononykus - Late Cretaceous, 70 Ma |
| Montanoceratops - 70 Ma Early Maastrichtian |
| Morawanocetus - Chattian |
| Morelladon - Early Cretaceous, 130 Ma |
| Morenosaurus - Late Cretaceous, 70-66 Ma |
| Moropus - Early Miocene, 23-13.6 Ma |
| Morotopithecus - Miocene[1] |
| Morrinhosuchus - Late Cretaceous |
| Mosaiceratops - Late Cretaceous, 94-72 Ma |
| Mosasaurus - Late Cretaceous, 70 Ma |
| Moschops - Capitanian, 265-260 Ma |
| Moschorhinus - Late Permian-Early Triassic |
| Mourasuchus - Miocene |
| Moythomasia - Middle Devonian-Late Devonian |
| Muraenosaurus - Middle Jurassic, Callovian |
| Mussaurus - Late Triassic, 215-203 Ma |
| Muttaburrasaurus - Early Cretaceous,[1] 112-99.6 Ma |
| Muyelensaurus - Late Cretaceous |
| Muzquizopteryx - Late Cretaceous, 85.8 Ma |
| Mycterosaurus - Early Permian |
| Myllokunmingia - 535-520 Ma |
| Mylodon - Pleistocene to Holocene |
| Mymoorapelta - Late Jurassic, 155-150 Ma |
| Myosauroides - Unavailable |
| Myosaurus - Early Triassic |
| Mystriosuchus - Upper Triassic |
| Mythunga - Early Cretaceous |
| N (79 species) |
| Naashoibitosaurus - Late Cretaceous, 73 Ma |
| Nakalipithecus - 9.9-9.8 Ma |
| Nalacetus - Early Eocene, 50 Ma |
| Nambalia - late Norian-earliest Rhaetian |
| Nambashag - 26-24 Ma |
| Nanchangosaurus - Middle Triassic, Anisian |
| Nanictosaurus - Middle Permian- Early Triassic, 261-247 Ma |
| Nanningosaurus - Late Cretaceous, Maastrichtian |
| Nannopterygius - Middle to Late Jurassic, Callovian-Tithonian |
| Nanogomphodon - Middle Triassic |
| Nanolestes - Jurassic |
| Nanosaurus - Unavailable |
| Nanotyrannus - Late Cretaceous, 68.5 Ma |
| Nanshiungosaurus - Late Cretaceous, 78-72 Ma |
| Nanuqsaurus - Late Cretaceous, 69.1 Ma |
| Nanyangosaurus - Late Cretaceous, 94-72 Ma |
| Narambuenatitan - Late Cretaceous, Campanian |
| Nardovelifer - Campanian |
| Nasutoceratops - Campanian, 75.9-75.5 Ma |
| Natchitochia - Middle Eocene |
| Navajodactylus - Late Cretaceous, 75.56-74.44 Ma |
| Nebulasaurus - Middle Jurassic, 174.1-168.3 Ma |
| Necrolestes - Early Miocene (Santacrucian)~21.0-17.5 Ma |
| Nedcolbertia - Barremian |
| Nedoceratops - Late Cretaceous, 67 Ma |
| Neimongosaurus - Late Cretaceous, c 85 Ma. |
| Nemegtomaia - Late Cretaceous, 70 Ma |
| Nemegtosaurus - Late Cretaceous, 70 Ma |
| Nemicolopterus - Early Cretaceous, 120 Ma |
| Neohelos - Miocene, 23-12 Ma |
| Neohipparion - Unavailable |
| Neopteroplax - Late Carboniferous |
| Neosodon - Upper Jurassic |
| Neotrirachodon - Middle Triassic |
| Neovenator - Early Cretaceous, 125 Ma |
| Neptunidraco - Middle Jurassic, Bajocian-Bathonian |
| Nesodactylus - Late Jurassic, 156 Ma |
| Neuquenraptor - Late Cretaceous, 90 Ma |
| Neuquensaurus - Late Cretaceous, 80 Ma |
| Newtonella - Unavailable |
| Nezpercius - Late Cretaceous, 83.5.5 Ma |
| Niaftasuchus - middle permian |
| Nicrosaurus - Late Triassic, 228-201.3 Ma |
| Nidimys - Late Cretaceous |
| Nigerpeton - Late Permian |
| Nikkasaurus - middle Permian |
| Nimravus - Oligocene, 33.3-26.3 Ma |
| Ningchengopterus - Early Cretaceous, 130-122 Ma |
| Ningyuansaurus - Early Cretaceous, 124.6 Ma |
| Niobrarasaurus - 87-82 Ma |
| Nipponosaurus - Late Cretaceous |
| Nitosaurus - Unavailable |
| Njalila - Late Permian |
| Noasaurus - Late Cretaceous, 70 Ma |
| Nodocephalosaurus - Late Cretaceous, Campanian |
| Nodosaurus - Late Cretaceous, 100.5-97 Ma |
| Nomingia - Late Cretaceous, 70 Ma |
| Nopcsaspondylus - Late Cretaceous |
| Noripterus - Early Cretaceous |
| Normannognathus - Late Jurassic |
| Notharctus - Middle Eocene-Late Eocene |
| Nothosaurus - 240-210 Ma Early to Late Triassic |
| Nothronychus - Late Cretaceous, 92-91 Ma |
| Nothrotheriops - Pleistocene, 2.6-0.011 Ma |
| Notoceratops - Late Cretaceous |
| Notocolossus - Late Cretaceous, 86 Ma |
| Notoemys - Tithonian of the Jurassic to the early Cretaceous |
| Notoetayoa - Paleocene to Eocene |
| Notohypsilophodon - Late Cretaceous |
| Notosuchus - Late Cretaceous, 85 Ma |
| Nqwebasaurus - Early Cretaceous, 140 Ma |
| Nundasuchus - Middle Triassic, Anisian |
| Nuralagus - Messinian-Pliocene |
| Nurhachius - Early Cretaceous, 120 Ma |
| Nuthetes - Early Cretaceous, 143 Ma |
| Nyasasaurus - Middle Triassic, 243 Ma |
| Nycteroleter - Middle Permian, Guadalupian |
| Nyctiphruretus - Guadalupian |
| Nyctosaurus - Late Cretaceous, 85-84.5 Ma |
| O (56 species) |
| Obamadon - Late Cretaceous, 66 Ma |
| Obruchevichthys - Unavailable |
| Odontochelys - Late Triassic, 220 Ma |
| Oedaleops - Early Permian |
| Ohmdenosaurus - Early Jurassic |
| Ojoceratops - Late Cretaceous, 68 Ma |
| Ojoraptorsaurus - Late Cretaceous, 69 Ma |
| Oligokyphus - Late Triassic-Early Jurassic |
| Oligolactoria - Early Oligocene[1] |
| Olorotitan - Late Cretaceous, 72 Ma |
| Omeisaurus - Middle Jurassic, Bathonian-Callovian |
| Omoiosicista - Burdigalian, 17 Ma |
| Omphalosaurus - Middle Triassic - Late Triassic, 250-235 Ma |
| Onchopristis - Albian-Maastrichtian |
| Oncorhynchus rastrosus - Late Miocene to Pleistocene |
| Onychonycteris - 52.5 Ma Early Eocene |
| Oohkotokia - Late Cretaceous, 74 Ma |
| Ophiacodon - Late Carboniferous to Early Permian 306-280 Ma |
| Ophiderpeton - Early Carboniferous to Early Permian 345.3-294.6 Ma |
| Ophthalmosaurus - Jurassic, 201.6-145.5 Ma[1] |
| Opisthocoelicaudia - Late Cretaceous, 70 Ma |
| Opisthodactylus - Miocene |
| Oreopithecus - Miocene |
| Orkoraptor - Cenomanian-Santonian[1] |
| Ornimegalonyx - Late Pleistocene |
| Ornithocheirus - Late Cretaceous, 110 Ma |
| Ornithodesmus - Early Cretaceous, 125 Ma |
| Ornitholestes - Late Jurassic, 154 Ma |
| Ornithomimus - Late Cretaceous, 76.5.5 Ma [1] |
| Ornithoprion - Carboniferous |
| Ornithopsis - Early Cretaceous |
| Ornithostoma - Early Cretaceous, 110 Ma |
| Ornithosuchus - Late Triassic Carnian |
| Orodromeus - Late Cretaceous, 76.7 Ma |
| Orohippus - early to middle Eocene[1] |
| Oromycter - Early Permian 290.1-268 Ma |
| Orovenator - Sakmarian, 289 Ma |
| Orthacanthus - Lower Carboniferous - Permian |
| Orthogoniosaurus - Late Cretaceous, 66 Ma |
| Orycterocetus - Miocene |
| Oryctodromeus - Late Cretaceous, Cenomanian |
| Osmakasaurus - Early Cretaceous, 137 Ma |
| Ostafrikasaurus - Late Jurassic, 148-145.5 Ma |
| Osteolepis - Middle Devonian |
| Othnielia - Late Jurassic, 150 Ma |
| Othnielosaurus - Late Jurassic, 155-148 Ma |
| Otodus - Paleocene-Miocene |
| Otsheria - Middle Permian, 267 Ma |
| Oudenodon - Late Permian |
| Ouranopithecus - Miocene |
| Ouranosaurus - Early Cretaceous, 125-112 Ma |
| Oviraptor - Late Cretaceous, 75 Ma |
| Owenetta - 260.5-250 Ma Mid Wuchiapingian - early Induan |
| Oxalaia - Early-Late Cretaceous, 98 Ma |
| Oxyosteus - Middle to Late Frasnian[1] |
| Ozraptor - Middle Jurassic, 170 Ma |
| P (280 species) |
| Pabwehshi - Late Cretaceous, Maastrichtian |
| Pachycephalosaurus - Late Cretaceous, 70 Ma |
| Pachydectes - Middle Permian |
| Pachygenys - Early Cretaceous, 106.9 Ma |
| Pachypleurosaurus - Middle Triassic, Ladinian |
| Pachyrhinos - Wuchiapingian, 260-254 Ma |
| Pachyrhinosaurus - 73.5-69 Ma |
| Pachytegos - Unavailable |
| Pacifichelys - Mid Miocene (Friasian-Laventan)~15.97-13.65 Ma |
| Padillasaurus - Early Cretaceous, Barremian |
| Pakasuchus - Early Cretaceous, 105 Ma |
| Pakicetus - Early Eocene, 52-48 Ma |
| Pakisaurus - Maastrichtian of the Cretaceous |
| Palaelodus - Late Oligocene-Pleistocene |
| Palaeobatrachus - Cretaceous-Pleistocene 130-Gelasian Ma |
| Palaeocarcharodon - Paleocene |
| Palaeocastor - Late Oligocene to Early Miocene |
| Palaeochersis - Late Triassic - Holocene, 210-0 Ma Possible Early and Middle Triassic records in the form of fossil tracks[1] |
| Palaeochiropteryx - Middle Eocene |
| Palaeohatteria - Early Permian, Sakmarian |
| Palaeoherpeton - Upper Carboniferous |
| Palaeolagus - Oligocene[1] |
| Palaeomastodon - Late Eocene-Early Oligocene |
| Palaeomolgophis - Early Carboniferous, 345.3-326.4 Ma |
| Palaeoniscum - Late Permian |
| Palaeoplethodon - Miocene, 20-30 Ma |
| Palaeopropithecus - Unavailable |
| Palaeosaniwa - Late Cretaceous 75-70 Ma |
| Palaeoscincus - Upper Cretaceous |
| Palaeospondylus - Middle Devonian |
| Palaeotherium - Early to Middle Eocene |
| Palemydops - Unavailable |
| Paleoparadoxia - Miocene |
| Paleopsilopterus - Late Paleocene-Early Eocene (Itaboraian)~58.7-48.6 Ma |
| Paleorhinus - Late Triassic, Carnian |
| Palmulasaurus - Late Cretaceous |
| Palorchestes - Miocene-Pleistocene |
| Paludititan - Late Cretaceous, Maastrichtian |
| Palvennia - Late Jurassic, Tithonian |
| Panamericansaurus - Late Cretaceous |
| Panderichthys - Late Devonian, 380 Ma |
| Pangerpeton - Middle or Late Jurassic, 164 Ma |
| Panguraptor - Early Jurassic, 201-196 Ma |
| Pannoniasaurus - Late Cretaceous, 85.3-83.5 Ma |
| Panoplosaurus - Late Cretaceous, 76 Ma |
| Panphagia - Late Triassic 231 Ma |
| Panthera gombaszoegensis - Early to Middle Pleistocene |
| Panthera leo atrox - Pleistocene, 0.34-0.011 Ma |
| Panthera leo fossilis - Middle Pleistocene |
| Panthera leo spelaea - Middle Pleistocene to Early Holocene, 1.3-0.011 Ma |
| Pantosaurus - Late Jurassic, Oxfordian |
| Pantydraco - Late Triassic |
| Pappocetus - Eocene |
| Pappochelys - Middle Triassic, 240 Ma |
| Paraburnetia - Late Permian |
| Paraceratherium - Oligocene, 34-23 Ma |
| Paradaphoenus - 33-6.9 Ma Early Oligocene-Early Miocene |
| Paraentelodon - Oligocene |
| Parahippus - Early Miocene |
| Parahongshanornis - Early Cretaceous, 120 Ma |
| Paralititan - Late Cretaceous, 99.6-93.5 Ma |
| Paramylodon - late Pliocene to Pleistocene |
| Paranthodon - Early Cretaceous, 145.5-136.4 Ma |
| Paraphysornis - Late Oligocene - Early Miocene |
| Paraplacodus - Middle Triassic |
| Pararcus - Middle Triassic |
| Pararhabdodon - Late Cretaceous, 67.5 Ma |
| Parasaurolophus - Late Cretaceous, 76.5-74.5 Ma |
| Parasaurus - Late Jurassic, Oxfordian |
| Parasuchus - Late Triassic, 222.5-212 Ma |
| Pareiasaurus - Wuchiapingian - Changhsingian, 260-252 Ma |
| Parexus - Early Devonian |
| Paritatodon - Bathonian-Callovian |
| Parksosaurus - Late Cretaceous, 70 Ma |
| Parvicursor - Late Cretaceous, 72 Ma |
| Parvinatator - Early Triassic-Middle Triassic |
| Pasquiaornis - Late Cretaceous, 93 |
| Patagonykus - Late Cretaceous |
| Patagopteryx - Late Cretaceous, 85 Ma |
| Patagornis - Middle Miocene |
| Patagosaurus - Middle Jurassic, 165-161 Ma |
| Patagosuchus - Late Cretaceous, 89.8 Ma |
| Patranomodon - Middle Permian-Late Permian |
| Pawpawsaurus - Early Cretaceous, 100 Ma |
| Pederpes - Tournasian, Early Carboniferous 348-347.6 Ma |
| Pedopenna - Middle or Late Jurassic, 164 Ma |
| Pegomastax - Early Jurassic, 200-190 Ma |
| Pelagosaurus - 183-176 Ma Toarcian |
| Pelanomodon - Late Permian, 259-252 Ma |
| Pelecanimimus - Early Cretaceous, 130 Ma |
| Pellegrinisaurus - Late Cretaceous~83-73 Ma |
| Peloneustes - Middle Jurassic |
| Pelorocephalus - Late Triassic |
| Peloroplites - Early Cretaceous-Late Cretaceous, 104.46-98.37 Ma |
| Pelorosaurus - Early Cretaceous, 132 Ma |
| Pelorovis - Late Pliocene-Holocene, 2.5-0.004 Ma |
| Peltephilus - Oligocene-Mid Miocene (Deseadan-Mayoan)~29.0-11.6 Ma |
| Peltobatrachus - Late Permian, 260.4-251 Ma |
| Penelopognathus - Early Cretaceous |
| Penghusuchus - Late Miocene |
| Pengornis - Early Cretaceous, 120 Ma |
| Pentaceratops - Late Cretaceous, 75.79-73 Ma |
| Pepesuchus - Campanian-Maastrichtian~84.9.0 Ma |
| Percrocuta - Middle Miocene-Late Miocene |
| Perleidus - Early Triassic-Middle Triassic |
| Peteinosaurus - Late Triassic, 221-210 Ma |
| Petrolacosaurus - Pennsylvanian, 302 Ma |
| Phaedrolosaurus - Early Cretaceous |
| Pharyngolepis - Late Silurian |
| Phascolonus - Unavailable |
| Phasmagyps - Chadronian |
| Philovenator - Late Cretaceous, 75 Ma |
| Phiomia - Late Eocene-Early Oligocene~37-30 Ma |
| Phoberomys - Late Miocene (Huayquerian)~9.0-7.246 Ma |
| Phoeniconotius - Early Miocene-Late Oligocene |
| Pholiderpeton - Late Carboniferous |
| Pholidogaster - Visean to Serpukhovian 345.3-318.1 Ma |
| Phonerpeton - Early Permian |
| Phonodus - Early Triassic |
| Phorusrhacos - Miocene, 20-13 Ma |
| Phosphatodraco - Late Cretaceous, 66 Ma |
| Phreatophasma - Middle Permian, 270 Ma |
| Phthinosuchus - Middle Permian, 268-265.8 Ma |
| Phuwiangosaurus - Early Cretaceous, 140-130 Ma |
| Phyllodon - Late Jurassic |
| Phyllodontosuchus - Early Jurassic |
| Physornis - Mid-Late Oligocene (Deseadan)~29.2-26.3 Ma |
| Piatnitzkysaurus - Middle Jurassic, 166-164 Ma |
| Piceoerpeton - Maastrichtian-Eocene |
| Pierolapithecus - Miocene |
| Pikaia - Middle Cambrian |
| Pinacosaurus - Late Cretaceous, 80-75 Ma |
| Pisanosaurus - Late Triassic, 228-216.5 Ma |
| Piscobalaena - Mid-Late Miocene (Mayoan-Huayquerian & Clarendonian)~11.608-5.332 Ma |
| Pissarrachampsa - Late Cretaceous, Campanian-Maastrichtian |
| Pistosaurus - Middle Triassic, Anisian-Ladinian |
| Pitekunsaurus - Late Cretaceous, Campanian |
| Piveteausaurus - Middle Jurassic, 164 Ma |
| Placerias - Late Triassic, 220-216 Ma |
| Placochelys - Mid to Late Triassic |
| Placodus - Middle Triassic, 245-235 Ma |
| Planicoxa - Early Cretaceous, 140-125 Ma |
| Platalearostrum - Middle Pliocene to Early Pleistocene |
| Plataleorhynchus - Early Cretaceous |
| Platecarpus - Late Cretaceous, 84-81 Ma |
| Plateosaurus - Late Triassic, 214-204 Ma |
| Platybelodon - Miocene, 15-10 Ma |
| Platyceratops - Unavailable |
| Platycraniellus - Early Triassic |
| Platygonus - Miocene to Pleistocene, 10.3-0.011 Ma |
| Platyhystrix - Late Carboniferous - Early Permian, 301-298 Ma |
| Platyoposaurus - Middle Permian |
| Platypterygius - Early - Late Cretaceous |
| Platysomus - Early Carboniferous-Late Permian |
| Plesiadapis - Late Paleocene-Early Eocene[1] |
| Plesiobalaenoptera - Late Miocene |
| Plesiohadros - Late Cretaceous, 80-75 Ma |
| Plesioplatecarpus - Late Cretaceous, 88-84 Ma |
| Plesiopleurodon - Late Cretaceous, 98 Ma |
| Plesiosaurus - Early Jurassic, 199.6-175.6 Ma |
| Plesiosuchus - Late Jurassic, 154-149 Ma |
| Plesiotylosaurus - Late Cretaceous, 70 Ma |
| Pliobatrachus - Cretaceous-Pleistocene 130-Gelasian Ma |
| Pliocyon - 20.6-13.6 Ma Early Oligocene-Early Miocene |
| Pliohippus - Mid Miocene |
| Pliopithecus - Miocene |
| Plioplatecarpus - Late Cretaceous |
| Pliosaurus - Late Jurassic, 155.7-147 Ma |
| Plotosaurus - Late Cretaceous, 70 Ma |
| Pneumatoraptor - Late Cretaceous, 85 Ma |
| Podokesaurus - Early Jurassic, 183 Ma |
| Poekilopleuron - Middle Jurassic, 167.7-166.1 Ma |
| Pogonodon - Oligocene |
| Polacanthus - Early Cretaceous, 130-125 Ma |
| Polonosuchus - Late Triassic, 216-204 Ma |
| Polycotylus - Late Cretaceous |
| Polymerolepis - Late Silurian |
| Polyptychodon - Late Cretaceous, 101-89.3 Ma |
| Polysternon - Late Cretaceous, 84.9 Ma |
| Pontosaurus - 100 Ma Late Cretaceous |
| Poposaurus - Late Triassic, 216 Ma |
| Postosuchus - Late Triassic, 221-203 Ma |
| Potangaspis - Early Devonian, 420 Ma |
| Pradhania - Early Jurassic, Sinemurian |
| Prejanopterus - Early Cretaceous, 125 Ma |
| Prenocephale - Late Cretaceous, 80-75 Ma |
| Prenoceratops - Late Cretaceous 74.3 Ma |
| Preondactylus - Late Triassic, 228 Ma |
| Presbytherium - Paleocene |
| Prestosuchus - Late Triassic |
| Prionosuchus - Guadalupian, 270 Ma |
| Priscakoala - Early Miocene |
| Pristerodon - Late Permian |
| Pristerognathoides - Middle Permian |
| Pristerognathus - Middle Permian |
| Pristichampsus - Eocene |
| Proaigialosaurus - Late Jurassic |
| Proaracana - Early- Middle Eocene[1] |
| Probactrosaurus - Late Cretaceous, 96-88 Ma |
| Probrachylophosaurus - Late Cretaceous, 79 Ma |
| Proburnetia - Late Permian |
| Procaimanoidea - Eocene |
| Procariama - Late Miocene - Late Pliocene |
| Proceratosaurus - Middle Jurassic, 165 Ma |
| Procolophon - Late Permian-Late Triassic |
| Procompsognathus - Late Triassic, 210 Ma |
| Proconsul - Miocene (23-5 MYA) |
| Procoptodon - Pleistocene |
| Procynosuchus - Wuchiapingian, 260.4-253.8 Ma |
| Prodicynodon - Unavailable |
| Progalesaurus - Induan, 252.17-251.2 Ma |
| Proganochelys - Late Triassic, 210 Ma |
| Prognathodon - Late Cretaceous |
| Prolacerta - Early Triassic |
| Proplanicoxa - Early Cretaceous, 126 Ma |
| Propliopithecus - Mid Oligocene |
| Propyrotherium - Unavailable |
| Prorubidgea - Wuchiapingian, 260.9-254 Ma |
| Prosalirus - Early Jurassic[1] |
| Prosansanosmilus - Late Miocene |
| Prosaurolophus - Late Cretaceous, 75.5-74.0 Ma |
| Prosictodon - Middle Permian |
| Prosqualodon - Late Oligocene-Early Miocene (Deseadan-Friasian)~28.4-16.0 Ma |
| Protemnocyon - Unavailable |
| Protemnodon - Pleistocene |
| Protenodontosaurus - 235-201 Ma Triassic |
| Proterochersis - Unavailable |
| Proterogyrinus - Carboniferous 331-323 Ma |
| Proterosuchus - Early Triassic, 252-250 Ma |
| Protheriodon - Middle Triassic |
| Proticia - Early Eocene |
| Protictitherium - Miocene-Pliocene |
| Protobrama - Late Cretaceous |
| Protocaptorhinus - Early Permian |
| Protoceratops - Late Cretaceous, 75-71 Ma |
| Protocetus - Middle Eocene |
| Protognathosaurus - Middle Jurassic |
| Protohadros - Late Cretaceous, 95 Ma |
| Protome - Norian/Rhaetian of the Triassic |
| Protopteryx - Early Cretaceous, 131 Ma |
| Protorosaurus - Lopingian, 260-251 Ma |
| Protostega - Late Cretaceous, 83.5 Ma |
| Protosuchus - Early Jurassic |
| Protuberum - Middle Triassic |
| Protypotherium - Miocene (Deseadan-Huayquerian)~23.03-6.8 Ma |
| Provelosaurus - Capitanian~260 Ma |
| Prozostrodon - Late Triassic |
| Psephoderma - Late Triassic |
| Pseudamphicyon - 16.9-11.1 Ma Early Oligocene-Early Miocene |
| Pseudarctos - 16.9-11.1 Ma Early Oligocene-Early Miocene |
| Pseudochampsa - Late Triassic, 229 Ma |
| Pseudocyon - 23.3-7 Ma Early Miocene - Middle Miocene |
| Pseudocyonopsis - 16.9-11.1 Ma Early Oligocene-Early Miocene |
| Pseudolagosuchus - Middle Triassic, 236-234 Ma |
| Psilopterus - Mid Oligocene-Late Miocene[1] (Deseadan-Montehermosan)~29.0-5.3 Ma |
| Psittacopes - Middle Eocene |
| Psittacosaurus - Early Cretaceous, 126-101 Ma |
| Pteranodon - Late Cretaceous, 86-84.5 Ma |
| Pteraspis - Pragian |
| Pterodactylus - Early Tithonian, 150.8-148.5 Ma |
| Pterodaustro - Early Cretaceous, 105 Ma |
| Pterodon - 37-28 Ma Late Eocene - Early Oligocene |
| Pteroplax - Carboniferous |
| Pterorhynchus - Middle Jurassic, 164 Ma |
| Ptychodus - late Cretaceous, 112-70 Ma |
| Puentemys - Mid Paleocene~60-58 Ma |
| Puertasaurus - Late Cretaceous(see text) |
| Puijila - Late Oligocene - Early Miocene, 24-21 Ma |
| Pukyongosaurus - Early Cretaceous |
| Pulanesaura - Early Jurassic, Hettangian-Sinemurian |
| Pumiliopareia - Changhsingian, 254-252 Ma |
| Puntanipterus - Late Jurassic-Early Cretaceous |
| Purbeckodon - Early Cretaceous, 140 Ma |
| Purussaurus - Early-Late Miocene (Colhuehuapian-Montehermosan)20.4-5.3 Ma |
| Pycnodus - Late Cretaceous-Lutetian |
| Pycnonemosaurus - Late Cretaceous, 70 Ma |
| Pyozia - Middle Permian, 265.8-263 Ma |
| Pyrenasaurus - Late Eocene |
| Pyroraptor - Late Cretaceous 70.6 Ma |
| Pyrotherium - Oligocene (Deseadan)~28.4-23 Ma |
| Q (16 species) |
| Qantas - Early Triassic |
| Qantassaurus - Early Cretaceous |
| Qianichthyosaurus - Triassic, 232.0-221.5 Ma[1] |
| Qianosuchus - Middle Triassic, Anisian |
| Qianxisaurus - Middle Triassic, Ladinian |
| Qiaowanlong - Early Cretaceous, 100 Ma |
| Qijianglong - Late Jurassic |
| Qinglongopterus - Late Jurassic, 160 Ma |
| Qingxiusaurus - Late Cretaceous |
| Qiupalong - Late Cretaceous, 76.5 Ma |
| Quaesitosaurus - Late Cretaceous, 85-70 Ma |
| Quercylurus - Early Oligocene |
| Quetecsaurus - Late Cretaceous, Turonian |
| Quetzalcoatlus - Late Cretaceous, Upper Maastrichtian, 68 Ma |
| Quilmesaurus - Late Cretaceous, Campanian-Maastrichtian |
| Quinkana - Late Oligocene-Late Pleistocene |
| R (67 species) |
| Rahiolisaurus - Late Cretaceous, 72.1 Ma |
| Rahonavis - Late Cretaceous, 70 Ma |
| Rajasaurus - Late Cretaceous, 69 Ma |
| Rapator - Early Cretaceous, 105 Ma |
| Rapaxavis - Early Cretaceous, 120 Ma |
| Rapetosaurus - Late Cretaceous, 70 Ma |
| Raptorex - Late Cretaceous, 70 Ma |
| Raranimus - Middle Permian, 270 Ma |
| Ratchasimasaurus - Early Cretaceous, Aptian |
| Rayososaurus - Early Cretaceous |
| Rebbachisaurus - Early-Late Cretaceous |
| Redondasaurus - Late Triassic 221-201.6 Ma |
| Redondavenator - Late Triassic, 200 Ma |
| Regaliceratops - Late Cretaceous, 68.5-67.5 Ma |
| Reginaselache - Visean, 330 Ma |
| Regnosaurus - Early Cretaceous |
| Reiszia - Unavailable |
| Reiszorhinus - Early Permian |
| Remingtonocetus - Middle Eocene, 45-43.5 Ma |
| Repenomamus - Early Cretaceous, 125-123.2 Ma |
| Revueltosaurus - Late Triassic, 225-209.5 Ma |
| Rhabdodon - Late Cretaceous, 70 Ma |
| Rhachiocephalus - Late Permian |
| Rhamphinion - Early Jurassic |
| Rhamphocephalus - Middle Jurassic Bathonian |
| Rhamphodopsis - Middle Devonian |
| Rhamphorhynchus - Late Jurassic, 150.8-148.5 Ma |
| Rhamphosuchus - Miocene |
| Rhinconichthys - Cretaceous |
| Rhinesuchus - Late Permian |
| Rhinodipterus - Unavailable |
| Rhiodenticulatus - Early Permian, Sakmarian |
| Rhipaeosaurus - Middle Permian, Capitanian |
| Rhizodus - Carboniferous 330-300 Ma |
| Rhizosmilodon - Early Pliocene |
| Rhoetosaurus - Middle Jurassic, 171-167 Ma |
| Rhomaleosaurus - Early Jurassic, Toarcian |
| Rhopalodon - Middle Permian |
| Rhynchippus - Late Oligocene (Deseadan)~28.4-23.03 Ma |
| Rhynchosaurus - Middle Triassic, Anisian |
| Richardoestesia - Late Cretaceous, 76.5 Ma |
| Riebeeckosaurus - Capitanian |
| Rileyasuchus - Late Triassic |
| Rileymillerus - Late Triassic |
| Rinchenia - Late Cretaceous, 70 Ma |
| Rinconsaurus - Late Cretaceous |
| Riograndia - Late Triassic, 225 Ma |
| Riojasaurus - Late Triassic, 227-213 Ma |
| Riojasuchus - Late Triassic, 217-215 Ma |
| Robertia - Middle Permian-Late Permian, 265-260 Ma |
| Rocasaurus - Late Cretaceous |
| Rodhocetus - Lutetian |
| Rolfosteus - Frasnian |
| Romeria - Asselian/Sakmarian of the Permian |
| Rotaryus - Early Permian, 284-279.5 Ma |
| Rubeosaurus - Late Cretaceous, 74.6 Ma |
| Rubeostratilia - Early Permian |
| Rubidgea - Permian |
| Rugocaudia - Early Cretaceous, Aptian-Albian |
| Rugops - Late Cretaceous, 95 Ma |
| Rugosuchus - Early Cretaceous |
| Ruhuhucerberus - Late Permian |
| Rukwasuchus - middle Cretaceous, 100 Ma |
| Rukwatitan - 100 Ma Cretaceous |
| Russellosaurus - Late Cretaceous, Turonian |
| Rutiodon - Late Triassic |
| Ruyangosaurus - Early Cretaceous, Aptian-Albian |
| S (198 species) |
| Sacabambaspis - Dapingian-Sandbian, 470-455 Ma |
| Sacisaurus - Late Triassic, 225 Ma |
| Saghacetus - Late Eocene |
| Sahaliyania - Late Cretaceous, 68 Ma |
| Saharastega - Permian |
| Saichania - Late Cretaceous, 75-70 Ma |
| Saltasaurus - Late Cretaceous, 70 Ma |
| Saltoposuchus - Late Triassic, 220 Ma |
| Saltopus - Late Triassic, 228 Ma |
| Samburupithecus - late Miocene |
| Samrukia - Late Cretaceous, 84 Ma |
| Sanajeh - Late Cretaceous, 68 Ma |
| Saniwa - Eocene, 48 Ma |
| Sanjuansaurus - Late Triassic, 231.4 Ma |
| Sansanosmilus - Late Miocene |
| Santanadactylus - Albian, 112 Ma |
| Sapeornis - Early Cretaceous, 124.5-120 Ma |
| Sarahsaurus - Early Jurassic |
| Sarcocyon - Unavailable |
| Sarcolestes - Late Jurassic, 165 Ma |
| Sarcoprion - Permian, 259-254 Ma |
| Sarcosaurus - Early Jurassic, 194 Ma |
| Sarcosuchus - Early Cretaceous, 112 Ma |
| Sarkastodon - 35 Ma Late Eocene |
| Saturnalia - Late Triassic, 228 Ma |
| Saurichthys - Early Triassic-Middle Triassic |
| Saurodon - Cretaceous |
| Saurolophus - Maastrichtian, 70-68.5 Ma |
| Sauroniops - Late Cretaceous, 100 Ma |
| Sauropareion - Early Triassic, Induan |
| Sauropelta - Early Cretaceous, 108.5 Ma |
| Saurophaganax - Late Jurassic, 150 Ma |
| Sauropleura - Unavailable |
| Sauroposeidon - Early Cretaceous, 112 Ma |
| Saurornithoides - Late Cretaceous, 75 Ma |
| Saurornitholestes - Late Cretaceous, 77-69 Ma |
| Saurosphargis - Middle Triassic, 246 Ma |
| Saurosuchus - Late Triassic, 231.4 Ma |
| Scalopodontes - Late Permian |
| Scaloposaurus - Early Triassic |
| Scansoriopteryx - Callovian to Kimmeridgian, 165-156 Ma |
| Scapanorhynchus - Early Cretaceous-Miocene |
| Scaphognathus - Late Jurassic, 155.7-150.8 Ma |
| Scelidosaurus - Early Jurassic, 196.5-183 Ma |
| Schizooura - Early Cretaceous, 120 Ma |
| Scipionyx - Early Cretaceous, 113 Ma |
| Sciurumimus - Late Jurassic, 150 Ma |
| Sclerocephalus - Late Carboniferous - Early Permian, 301-297 Ma |
| Sclerorhynchus - Late Cretaceous |
| Sclerosaurus - Early-Middle Triassic, Olenekian-Anisian |
| Scolosaurus - Late Cretaceous, 76.5 Ma |
| Scullya - Capitanian |
| Scutellosaurus - Early Jurassic, 196 Ma |
| Scutosaurus - Lopingian, 254-252 Ma |
| Scylacognathus - Middle Permian, Capitanian |
| Scylacops - Late Permian |
| Scylacorhinus - Unavailable |
| Scylacosaurus - Permian |
| Scymnosaurus - Unavailable |
| Sebecus - Early Paleocene-Mid Miocene (Tiupampan-Laventan)~66-11.8 Ma |
| Secernosaurus - Late Cretaceous, Maastrichtian |
| Secodontosaurus - Cisuralian, 285-272.3 Ma |
| Sefapanosaurus - Early Jurassic, 200 Ma |
| Segisaurus - Early Jurassic, 183 Ma |
| Segnosaurus - Late Cretaceous, 90 Ma |
| Seitaad - Early Jurassic, Pliensbachian |
| Selenemys - Late Jurassic, 151 Ma |
| Sellacoxa - Early Cretaceous, 140 Ma |
| Selmasaurus - Late Cretaceous |
| Seminobatrachus - Thanetian - Ypresian, 57-54 Ma |
| Serendipaceratops - Early Cretaceous |
| Sericipterus - Late Jurassic, 160 Ma |
| Seymouria - Early Permian, |
| Shamosaurus - Early Cretaceous, Aptian-Albian |
| Shanag - Early Cretaceous, 130 Ma |
| Shantungosaurus - Late Cretaceous, Middle to Late Campanian |
| Shanweiniao - Early Cretaceous, 122 Ma |
| Shanxia - Late Cretaceous |
| Shanyangosaurus - Late Cretaceous |
| Shaochilong - Late Cretaceous, 92 Ma |
| Shastasaurus - Middle-Late Triassic, 235.0-205.6 Ma[1] |
| Shenzhoupterus - Early Cretaceous, 120 Ma |
| Shenzhousaurus - Early Cretaceous, 125 Ma |
| Shidaisaurus - Middle Jurassic |
| Shihtienfenia - Capitanian, 260 Ma |
| Shixinggia - Late Cretaceous, 70 Ma |
| Shonisaurus - Late Triassic, 221.5-212.0 Ma[1] |
| Shunosaurus - Middle Jurassic, 170 Ma |
| Shuvosaurus - Late Triassic |
| Shuvuuia - Late Cretaceous, 75 Ma |
| Shweboemys - Early Paleocene to present |
| Siamodon - Early Cretaceous, Aptian |
| Siamosaurus - Early Cretaceous, 130 Ma |
| Siamotyrannus - Early Cretaceous, 145-125 Ma |
| Siats - Late Cretaceous, 98.5 Ma |
| Sigilmassasaurus - Upper Cretaceous, 100-94 Ma |
| Silesaurus - Late Triassic, 230 Ma |
| Sillosuchus - Late Triassic |
| Silvanerpeton - Early Carboniferous Brigantian |
| Silvisaurus - Late Cretaceous, 96-93.5 Ma |
| Similicaudipteryx - Early Cretaceous, 124-120 Ma |
| Simolestes - 170-145 Ma Middle-Late Jurassic |
| Simorhinella - Late Permian |
| Simosuchus - Late Cretaceous, 70 Ma |
| Sineleutherus - Jurassic, Bathonian-Oxfordian |
| Sinerpeton - Unavailable |
| Sinobaatar - Early Cretaceous |
| Sinocalliopteryx - Early Cretaceous, 124.6 Ma |
| Sinoceratops - Late Cretaceous, 72 Ma |
| Sinocoelurus - Upper Jurassic |
| Sinoconodon - Early Jurassic |
| Sinodelphys - Early Cretaceous, 125 Ma |
| Sinokannemeyeria - Anisian, 243.53 Ma |
| Sinopa - Eocene-Early Oligocene |
| Sinophoneus - Middle Permian, 270 Ma |
| Sinopliosaurus - Early Cretaceous |
| Sinopterus - Early Cretaceous, 120 Ma |
| Sinornithoides - Early Cretaceous, 113 Ma |
| Sinornithomimus - Late Cretaceous, 92 Ma |
| Sinornithosaurus - Early Cretaceous, 124.6-122 Ma |
| Sinosauropteryx - Early Cretaceous, 124.6-122 Ma |
| Sinosaurus - Early Jurassic, 201-196 Ma |
| Sinotherium - Miocene-Pliocene |
| Sinotyrannus - Early Cretaceous, 120 Ma |
| Sinovenator - Early Cretaceous, 125 Ma |
| Sinraptor - Late Jurassic, 160 Ma |
| Sivapithecus - 12.5-8.5 Ma Miocene |
| Sivatherium - Pliocene to Holocene, 5-0.008 Ma |
| Skorpiovenator - Late Cretaceous, 95 Ma |
| Sludica - Late Permian |
| Smilodectes - 55-50 Ma Early Eocene |
| Smilodon - Early Pleistocene to Early Holocene, 2.5-0.01 Ma |
| Smilosuchus - Late Triassic |
| Smok - Late Triassic, 205-200 Ma |
| Solenodonsaurus - Westphalian, 313-304 Ma |
| Sonidosaurus - Late Cretaceous |
| Sonorasaurus - Unavailable |
| Sordes - Late Jurassic, 155.7 Ma |
| Spathobatis - Late Jurassic |
| Sphaerotholus - Late Cretaceous, 73 Ma |
| Sphenacanthus - Early Carboniferous |
| Sphenacodon - Pennsylvanian to Cisuralian, 300-280 Ma |
| Sphenocephalus - Late Cretaceous |
| Sphenonectris - Unavailable |
| Sphenosaurus - Permian |
| Spinophorosaurus - Middle Jurassic, 167 Ma |
| Spinops - Late Cretaceous, 76.5 Ma |
| Spinosaurus - Early-Late Cretaceous, 112-93.5 Ma |
| Spinostropheus - Middle Jurassic |
| Spitrasaurus - Late Jurassic |
| Squalicorax - Late Cretaceous |
| Squalodon - Oligocene-Miocene |
| Stagonolepis - Late Triassic, Carnian |
| Stahleckeria - Middle Triassic |
| Staurikosaurus - Late Triassic, 225 Ma |
| Stegoceras - Late Cretaceous, 77.5-74 Ma |
| Stegomastodon - Pliocene-Late Pleistocene~4.9-0.03 Ma |
| Stegosaurus - Late Jurassic, 155-150 Ma |
| Stenaulorhynchus - Middle Triassic, Anisian |
| Steneosaurus - 183-163 Ma Toarcian - Callovian |
| Stenocybus - Middle Permian, 270 Ma |
| Stenopelix - Early Cretaceous, 127 Ma |
| Stenopterygius - Early Jurassic, 183-179 Ma |
| Stensioella - Emsian |
| Stereorhachis - Late Carboniferous |
| Steropodon - Early Cretaceous |
| Stethacanthus - 382.7-323.2 Ma Late Devonian to Early Carboniferous |
| Sthenurus - Pleistocene |
| Stokesosaurus - Late Jurassic, 150 Ma |
| Stomatosuchus - 100-94 Ma Cenomanian |
| Stormbergia - Early Jurassic, 199-189 Ma |
| Stratesaurus - Early Jurassic, 199.6-198 Ma |
| Stratiotosuchus - Late Cretaceous, Campanian-Maastrichtian |
| Streptospondylus - Middle Jurassic, 161 Ma |
| Stromerius - Late Eocene |
| Strunius - Late Devonian |
| Struthiocephalus - Capitanian, 265-260 Ma |
| Struthiomimus - Late Cretaceous, 77 Ma |
| Struthiosaurus - Late Cretaceous, 85 Ma |
| Stupendemys - Late Miocene-Early Pliocene (Huayquerian-Montehermosan)~9.0-5 Ma |
| Stygimoloch - Late Maastrichtian, 66 Ma |
| Styracocephalus - Capitanian, 265.8-260.4 Ma |
| Styracosaurus - Late Cretaceous, 75.5-75 Ma |
| Styxosaurus - Late Cretaceous, 83.5-80.5 Ma |
| Suchogorgon - Late Permian |
| Suchomimus - Early Cretaceous, 125-112 Ma |
| Sulaimanisaurus - Late Cretaceous, Maastrichtian |
| Sulcusuchus - Late Cretaceous |
| Suminia - Late Permian, 260 Ma |
| Supersaurus - Late Jurassic, 153 Ma |
| Supradapedon - Middle - Late Triassic |
| Suuwassea - Late Jurassic |
| Sveltonectes - Early Cretaceous, 126 Ma |
| Sycosaurus - Late Permian[1] 259-252.3 Ma |
| Synostocephalus - Unavailable |
| Syodon - Middle Permian 267-260 Ma |
| Syrtosmilus - Late Miocene |
| Szechuanosaurus - Late Jurassic, 160 Ma |
| T (162 species) |
| Tachiraptor - Early Jurassic |
| Tacuarembemys - Late Jurassic |
| Tadzhikosuchus - Late Cretaceous |
| Takracetus - Middle Eocene |
| Talarurus - Late Cretaceous, 90 Ma |
| Talenkauen - Late Cretaceous, 96.2 Ma |
| Talos - Campanian, 75.95 Ma |
| Talpanas lippa - Holocene 4050 BCE (Holocene) |
| Tambachia - Early Permian, 284-279.5 Ma |
| Tambatitanis - Early Cretaceous |
| Tangvayosaurus - Early Cretaceous |
| Tanius - Late Cretaceous, Campanian |
| Taniwhasaurus - Late Cretaceous |
| Tanycolagreus - Late Jurassic, 153-150 Ma |
| Tanystropheus - Middle Triassic, 245-228 Ma |
| Tanytrachelos - Late Triassic |
| Taognathus - Unavailable |
| Tapejara - Aptian-Albian, 112 Ma |
| Tapinocaninus - Wordian |
| Tapinocephalus - Guadalupian epoch, Capitanian stage |
| Tapuiasaurus - Early Cretaceous, 120 Ma |
| Tarascosaurus - Late Cretaceous, approximately 80 Ma |
| Tarbosaurus - Late Cretaceous, 70 Ma |
| Tarchia - Late Cretaceous, 75-70 Ma |
| Tarjadia - Middle Triassic, Anisian-Ladinian |
| Tastavinsaurus - Early Cretaceous |
| Tatankacephalus - Early Cretaceous, 108.5 Ma |
| Tatankaceratops - Late Maastrichtian, 66 Ma |
| Tataouinea - Albian |
| Tatenectes - Late Jurassic, Oxfordian |
| Tatisaurus - Early Jurassic, Sinemurian |
| Taveirosaurus - Late Cretaceous |
| Tawa - Late Triassic, 215 Ma |
| Tazoudasaurus - Early Jurassic, Toarcian [1] |
| Technosaurus - Late Triassic, 210 Ma |
| Tehuelchesaurus - Late Jurassic |
| Teilhardina - 56-47 Ma Early Eocene - Middle Eocene |
| Teinolophos - Early Cretaceous |
| Teleidosaurus - Bajocian - Bathonian, 168-167 Ma |
| Teleosaurus - 171-164 Ma Bajocian - Bathonian |
| Telicomys - Late Miocene (Mayoan-Huayquerian)~11.608-7.246 Ma [1] |
| Telmatosaurus - Late Cretaceous, 70 Ma |
| Temnocyon - Oligocene-Early Miocene |
| Temnodontosaurus - Early Jurassic, Hettangian-Toarcian |
| Tendaguria - Late Jurassic, 155 Ma |
| Tendaguripterus - Late Jurassic |
| Tenontosaurus - Early Cretaceous, 115-108 Ma |
| Teraterpeton - Late Triassic |
| Teratophoneus - Late Cretaceous, 77-76 Ma |
| Teratosaurus - Late Triassic, 216-204 Ma |
| Termatosaurus - Late Triassic |
| Terminonatator - Late Cretaceous, Campanian |
| Terrestrisuchus - Late Triassic |
| Tetanopsyrus - Lochkovian |
| Tethysaurus - Late Cretaceous, 93-89 Ma |
| Tethyshadros - Late Cretaceous |
| Tetraceratops - Leonardian stage, 275 Ma |
| Tetracynodon - Late Permian - Early Triassic |
| Tetrapodophis - Early Cretaceous |
| Texacephale - Late Campanian, 77 Ma |
| Texasetes - Early Cretaceous, 100 Ma |
| Teyumbaita - Norian |
| Thadeosaurus - Changhsingian - Induan 253.8-249.7 Ma |
| Thalassiodracon - Rhaetian - Hettangian |
| Thalassodromeus - Albian-Aptian |
| Thalassomedon - Late Cretaceous, 95 Ma |
| Thalattoarchon - Middle Triassic, 247.2-242.0 Ma[1] |
| Thecodontosaurus - Late Triassic-Early Jurassic,[1] 203.6-199.6 Ma |
| Theiophytalia - Early Cretaceous, 112 Ma |
| Thelodus - Silurian |
| Theosodon - Early Miocene |
| Theriognathus - Wuchiapingian, 260.4-253.8 Ma |
| Therizinosaurus - Late Cretaceous, 70-66 Ma |
| Theropsodon - Middle Triassic |
| Thescelosaurus - Late Cretaceous, 66 Ma |
| Thililua - Late Cretaceous, Turonian |
| Thrinaxodon - Early Triassic, 251-247 Ma |
| Thrissops - Late Jurassic-Late Cretaceous |
| Thylacoleo - late Pliocene-late Pleistocene |
| Thylacosmilus - Late Miocene-Piacenzian~9-3 Ma |
| Tianchisaurus - Jurassic |
| Tianyulong - Late Jurassic, 158.5 Ma |
| Tianyuraptor - Early Cretaceous, 122 Ma |
| Tianzhenosaurus - Late Cretaceous |
| Tiarajudens - Capitanian, 260 Ma |
| Tichvinskia - Early Triassic |
| Tienshanosaurus - Late Jurassic |
| Tiktaalik - Late Devonian, 375 Ma |
| Timurlengia - Late Cretaceous, 90 Ma |
| Tirraturhinus - Unavailable |
| Titanichthys - Famennian |
| Titanis - Blancan-Gelasian,[1] 4.9-1.8 Ma |
| Titanoboa - Paleocene, 60-58 Ma |
| Titanoceratops - Late Cretaceous, 74.73-73.55 Ma |
| Titanocetus - Serravallian |
| Titanoides - Late Paleocene, 59-56 Ma |
| Titanophoneus - Middle Permian,265 Ma |
| Titanosaurus - Late Cretaceous, 70 Ma |
| Titanosuchus - Capitanian, 265 Ma |
| Tochisaurus - Late Cretaceous, 69 Ma |
| Togocetus - 46-44 Ma |
| Tohoraata - Late Oligocene, 27.3-25.2 Ma |
| Tokarahia - Late Oligocene, 27.3-25.2 Ma |
| Tokosaurus - Late Permian, 264 Ma |
| Tomarctus - early to middle Miocene 20.43-13.6 Ma |
| Tonganosaurus - Early Jurassic |
| Toretocnemus - Triassic, 235.0-221.5 Ma[1] |
| Tornieria - Late Jurassic, 150 Ma |
| Torosaurus - Late Cretaceous, 68 Ma |
| Torvoneustes - Late Jurassic, 157.3-152.1 Ma |
| Torvosaurus - Late Jurassic, 153-148 Ma |
| Tototlmimus - 72 Ma Campanian |
| Toxochelys - Late Cretaceous |
| Toxodon - Late Miocene-Late Pleistocene (Mayoan-Lujanian)~11.6-0.011 Ma |
| Toyotamaphimeia - Pleistocene |
| Tranatocetus - Late Miocene, 9.6-8 Ma |
| Traukutitan - Upper Cretaceous, Santonian |
| Traversodon - Late Triassic |
| Tremataspis - Late Silurian |
| Trematochampsa - Late Cretaceous |
| Trematolestes - Middle Triassic |
| Trematosaurus - Early Triassic |
| Triadobatrachus - Early Triassic, 250 Ma |
| Triceratops - Late Cretaceous, 68 Ma |
| Tricleidus - Middle Jurassic, Callovian |
| Trigodon - Late Miocene-Pliocene (Mayoan-Montehermosan)~11.608-4.0 Ma |
| Trigonosaurus - Late Cretaceous |
| Trilophosaurus - Late Triassic, Carnian-Norian |
| Trimucrodon - Late Jurassic |
| Trinacromerum - Late Cretaceous |
| Trinisaura - Late Cretaceous, 80 Ma |
| Triodus - Permian |
| Trirachodon - Early Triassic - Middle Triassic |
| Tristychius - Early Carboniferous |
| Tritemnodon - Eocene |
| Trithelodon - Lower Jurassic |
| Tritylodon - Early Jurassic |
| Trochosaurus - Permian |
| Trochosuchus - Unavailable |
| Troodon - Late Cretaceous, 77.5-76.5 Ma |
| Tropeognathus - Aptian-Albian, 112 Ma |
| Tropidostoma - Late Permian |
| Trucidocynodon - Late Triassic, 220 Ma |
| Tsaagan - Late Cretaceous, 75 Ma |
| Tsagantegia - Late Cretaceous, 90 Ma |
| Tseajaia - Permian |
| Tsintaosaurus - Late Cretaceous, 70 Ma |
| Tsoabichi - Eocene |
| Tubonasus - Frasnian |
| Tugulusaurus - Early Cretaceous, Barremian - Albian |
| Tuojiangosaurus - Late Jurassic, 160 Ma |
| Tupandactylus - Early Cretaceous, 112 Ma |
| Tupuxuara - Albian, 112 Ma |
| Turanoceratops - Late Cretaceous, 90 Ma |
| Turiasaurus - Late Jurassic, 145 Ma |
| Turkanapithecus - Miocene 28.4-11.61 Ma |
| Tylocephale - Late Campanian, 80-70 Ma |
| Tylocephalonyx - 23.03-5.33 Ma Miocene |
| Tylosaurus - Late Cretaceous, 86.5-75 Ma |
| Tyrannoneustes - Middle Jurassic |
| Tyrannosaurus - Late Cretaceous, 68 Ma |
| Tyrannotitan - Early Cretaceous, 118 Ma |
| U (21 species) |
| Uatchitodon - Late Triassic |
| Uberabatitan - Late Cretaceous, 67 Ma |
| Udanoceratops - Late Cretaceous, Campanian |
| Ugrunaaluk - Late Cretaceous, 69.2 Ma |
| Uintatherium - Eocene,45-37 Ma |
| Ulemica - Middle Permian, 265 Ma |
| Ulemosaurus - Capitanian, 265-260 Ma |
| Ultrasaurus - Early Cretaceous, 110-100 Ma |
| Unaysaurus - Late Triassic, 225 Ma |
| Undorosaurus - Late Jurassic,[1] 150.8-145.5 Ma |
| Unenlagia - Late Cretaceous, 89 Ma |
| Unescoceratops - Late Cretaceous, 76.5-75 Ma |
| Unquillosaurus - Late Cretaceous, 75 Ma |
| Unwindia - Late Cretaceous, Cenomanian |
| Urbacodon - Late Cretaceous |
| Ursus arctos crowtheri - Unavailable |
| Ursus spelaeus - Middle to Late Pleistocene, 0.25-0.027 Ma |
| Utahceratops - Late Cretaceous, 76.4-75.5 Ma |
| Utahraptor - Early Cretaceous, 126 Ma |
| Utatsusaurus - Early Triassic, 248-245 Ma |
| Uteodon - Upper Jurassic |
| V (38 species) |
| Vagaceratops - Late Cretaceous, 75 Ma |
| Vahiny - Maastrichtian, 70 Ma |
| Valdoraptor - Early Cretaceous, 136 Ma |
| Valdosaurus - Early Cretaceous |
| Vallecillosaurus - Late Cretaceous, 100 Ma |
| Vallesaurus - Late Triassic, Norian |
| Vampyrictis - Late Miocene |
| Vancleavea - 228-203.6 Ma Late Triassic |
| Varanodon - Early Permian, 271 Ma |
| Varanops - Early Permian, 279.5-272.5 Ma |
| Varanosaurus - Early Permian, 280 Ma |
| Varanus priscus - Pleistocene, 1.5-0.04 Ma |
| Variraptor - Late Cretaceous, 70 Ma |
| Vectidraco - Early Cretaceous, 124 Ma |
| Vectocleidus - Early Cretaceous, 127-125 Ma |
| Vegasaurus - Late Cretaceous, 72 Ma |
| Vegavis - Late Cretaceous, 68 Ma |
| Velafrons - Late Cretaceous, 72 Ma |
| Velociraptor - Late Cretaceous, 75-71 Ma |
| Velocisaurus - Late Cretaceous, 85 Ma |
| Venaticosuchus - Late Triassic |
| Venenosaurus - Early Cretaceous, 112 Ma |
| Venjukovia - Middle Permian, 267 Ma |
| Ventastega - 365 Ma Famennian (Late Devonian) |
| Veterupristisaurus - Late Jurassic, 154-150 Ma |
| Viavenator - Late Cretaceous, Santonian |
| Victoriaceros - Middle Miocene, 15 Ma |
| Vinialesaurus - Late Jurassic, Oxfordian |
| Vintana - Maastrichtian~70.6 Ma |
| Vishnucyon - Unavailable |
| Vitakridrinda - Late Cretaceous, 69 Ma |
| Vivaxosaurus - Late Permian |
| Viverra leakeyi - Late Miocene to Pleistocene |
| Vjushkovia - Early Triassic, Olenekian |
| Voay - Pleistocene - Holocene, 0.126-0 Ma |
| Volgadraco - Late Cretaceous |
| Volkheimeria - Middle Jurassic, 160 Ma |
| Vulcanodon - Early Jurassic, Toarcian 183-175 Ma |
| W (23 species) |
| Waipatia - Late Oligocene |
| Wakinosaurus - Early Cretaceous, Hauterivian-Barremian |
| Walgettosuchus - Early Cretaceous |
| Wangosaurus - Middle Triassic, 237 Ma |
| Wannanosaurus - Campanian, 80 Ma |
| Wannchampsus - Early Cretaceous, 112 Ma |
| Wargosuchus - Late Cretaceous, Santonian |
| Wendiceratops - Late Cretaceous, 79-78.7 Ma |
| Westlothiana - Visean, 338 Ma |
| Westollrhynchus - Unavailable |
| Westphaliasaurus - Early Jurassic, Pliensbachian |
| Willinakaqe - Upper Cretaceous, Campanian-Maastrichtian |
| Willungacetus - Oligocene |
| Wintonotitan - 100 Ma Early Cretaceous |
| Witwatia - 37-33 Ma Eocene |
| Wodnika - Late Permian |
| Wonambi - Miocene-Pleistocene 23.03-0.012 Ma |
| Woolungasaurus - Early Cretaceous |
| Wuerhosaurus - Early Cretaceous, uncertain |
| Wulagasaurus - Late Cretaceous, 69 Ma |
| Wulatelong - Late Cretaceous, Campanian |
| Wuttagoonaspis - Middle Devonian |
| Wyleyia - Early Cretaceous, 138 Ma |
| X (25 species) |
| Xenacanthus - Late Devonian-Triassic |
| Xenoceratops - Late Cretaceous, 79.5 Ma |
| Xenohystrix - Early Miocene-recent |
| Xenokeryx - 15 Ma Miocene |
| Xenoposeidon - Early Cretaceous,140 Ma |
| Xenorophus - Oligocene |
| Xenosmilus - Irvingtonian |
| Xenotarsosaurus - Late Cretaceous, 95 Ma |
| Xeradipterus - Frasnian |
| Xianglong - Early Cretaceous |
| Xiangornis - Lower Cretaceous |
| Xianshanosaurus - Early Cretaceous, Aptian-Albian |
| Xianshou - 160 Ma Oxfordian |
| Xiaosaurus - Middle Jurassic |
| Xiaotingia - Late Jurassic, 160 Ma |
| Xilousuchus - Early Triassic, 247 Ma |
| Xinjiangovenator - Early Cretaceous |
| Xinpusaurus - Late Triassic, Carnian |
| Xiongguanlong - Early Cretaceous, 112 Ma |
| Xiphactinus - Albian-Maastrichtian[1] |
| Xixiasaurus - Late Cretaceous, 86 Ma |
| Xixiposaurus - Early Jurassic |
| Xuanhanosaurus - Middle Jurassic |
| Xuanhuaceratops - Late Jurassic, 167.7-161.2 Ma |
| Xuwulong - Early Cretaceous, Aptian-Albian |
| Y (29 species) |
| Yacarerani - Late Cretaceous |
| Yaguarasaurus - Turonian, 90 Ma |
| Yamaceratops - Late Cretaceous |
| Yandusaurus - Middle Jurassic, Bathonian |
| Yangchuanosaurus - Middle Jurassic, 168.3-163.5 Ma |
| Yanoconodon - Early Cretaceous, 122 Ma |
| Yanornis - Early Cretaceous, 125-120 Ma |
| Yaverlandia - Lower Cretaceous |
| Yi - MIddle or Late Jurassic, 160 Ma |
| Yimenosaurus - Early Jurassic, 190 Ma |
| Yinlong - Late Jurassic, 158 Ma |
| Yixianopterus - Aptian of the Cretaceous |
| Yixianornis - Early Cretaceous, 120 Ma |
| Yixianosaurus - Early Cretaceous, 122 Ma |
| Ymeria - Late Devonian |
| Yongjinglong - Early Cretaceous |
| Youngina - Late Permian, 250 Ma |
| Youngosuchus - Middle Triassic |
| Ysengrinia - Late Oligocene-Early Miocene |
| Yuanmousaurus - Middle Jurassic |
| Yuanotherium - Oxfordian |
| Yueosaurus - Cretaceous, Aptian-Cenomanian |
| Yulong - Late Cretaceous, Late Cretaceous |
| Yunmenglong - Early Cretaceous, 125-100.5 Ma |
| Yunnanosaurus - Early Jurassic , 201-168 Ma |
| Yurgovuchia - Early Cretaceous, 130-125 Ma |
| Yurlunggur - Oligocene-Miocene, 23.03-11.608 Ma |
| Yutyrannus - Early Cretaceous, 124.6 Ma |
| Yuzhoupliosaurus - Middle Jurassic |
| Z (34 species) |
| Zaglossus hacketti - Pleistocene |
| Zalambdalestes - Late Cretaceous |
| Zalmoxes - 70 Ma |
| Zanabazar - Late Cretaceous, 70 Ma |
| Zapalasaurus - Early Cretaceous |
| Zapsalis - Late Cretaceous, 75 Ma |
| Zaraapelta - Late Cretaceous, 75-71 Ma |
| Zarafasaura - Late Cretaceous, Maastrichtian |
| Zby - Late Jurassic |
| Zenaspis - Early Devonian |
| Zephyrosaurus - Early Cretaceous, Aptian-Albian |
| Zhanghenglong - Late Cretaceous, 85 Ma |
| Zhangheotherium - Early Cretaceous, 125 Ma |
| Zhejiangopterus - Late Cretaceous, 81.5 Ma |
| Zhejiangosaurus - Late Cretaceous, 100.5-93.9 Ma |
| Zhenyuanlong - Early Cretaceous 125 Ma |
| Zhenyuanopterus - Early Cretaceous, 124.6 Ma |
| Zhongjianichthys - 535-525 Ma |
| Zhongornis - Early Cretaceous, 122 Ma |
| Zhongyuansaurus - Lower Cretaceous |
| Zhuchengceratops - Upper Cretaceous, 70 Ma |
| Zhuchengtyrannus - Late Cretaceous, 73.5 Ma |
| Zhyrasuchus - Late Cretaceous |
| Ziapelta - Campanian, 74.5-72.6 Ma |
| Zoneait - Middle Jurassic-170 |
| Zulmasuchus - Early Paleocene (Tiupampan-Peligran)~65.5-61.7 Ma |
| Zuniceratops - Late Cretaceous, 91 Ma |
| Zuolong - Late Jurassic, 161.2-155.2 Ma |
| Zuoyunlong - Late Cretaceous, Cenomanian |
| Zupaysaurus - 200-197 Ma Late Triassic to Early Jurassic |
| Zygomaturus - Pleistocene |
| Zygophyseter - Tortonian |
| Zygorhiza - Late Eocene |
| Zygosaurus - Middle Permian |