| Named By: | R. Estes in 1964 |
| Time Period: | Triassic |
| Location: | Canada, Saskatchewan - Frenchman Formation. England - Durlston Formation, Tunbridge Wells Sand Formation. Germany - Buckeberg Formation. India - Kota Formation. Spain - Artoles Formation, Camarillas Formation, El Castellar Formation, La Pedrera de Rubies Formation, Vega de Pas Formation. Tanzania - Tendaguru Formation. Thailand - Sao Khua Formation. USA, Arizona - Chinle Formation, Colorado - Laramie Formation, Montana - Fruitland Formation, New Mexico - Petrified Forest Formation, San Pedro Arroyo Formation, North Dakota - Hell Creek Formation, Oklahoma - Antlers Formation, Texas - Aguja Formation, Tecovas Formation, Twin Mountains Formation, Utah - Masuk Formation, Wyoming - Cloverly Formation, Ferris Formation, Lance Formation, Mesaverde Formation |
| Size: | Unavailable |
| Diet: | Carnivore |
| Fossil(s): | Mostly known from teeth, fossilised egg capsules are also known |
| Classification: | | Chordata | Chondrichthyes | Elasmobranchii | Selachimorpha | Hybodontiformes | Hybodontoidea | Hybodontidae | |
| Also known as: | | Priscavolucris | |
Lonchidion is a genus of prehistoric sharks in the family Hybodontidae. It was described by R. Estes in 1964, and the type species is L. selachas. A new species, L. ferganensis, was described by Jan Fischer, Sebastian Voigt, Jorg W. Schneider, Michael Buchwitz and Silke Voigt in 2011, from fossilized teeth and egg capsules.