| Named By: | Van Hoepan in 1916 |
| Time Period: | Capitanian, 265-260 Ma |
| Location: | South Africa - Karoo |
| Size: | Usually around 3 meters long, some specimens are up to 5 meters long |
| Diet: | unavailable |
| Fossil(s): | Many individual fossils |
| Classification: | | Chordata | Synapsida | Therapsida | Dinocephalia | Tapinocephalia | Titanosuchidae | |
Jonkeria was a very large omnivorous (although there is some dispute to this - e.g. Colbert 1969 p. 136) dinocephalian, from the Tapinocephalus Assemblage Zone, Lower Beaufort Group, of the South African Karroo.