''Theroteinus'' is an extinct genus of

haramiyida Haramiyida ("thief" from Arabic الحرامية (al ḥarāmiyah), "thief, bandit") is a possibly polyphyletic order of mammaliaform cynodonts or mammals of controversial taxonomic affinites. Their teeth, which are by far the most common remains ...

mammaliaform Mammaliaformes ("mammalian forms") is a clade that contains the crown group mammals and their closest extinct relatives; the group radiated from earlier probainognathian cynodonts. It is defined as the clade originating from the most recent com ...

s from the

Late Triassic The Late Triassic is the third and final epoch (geology), epoch of the Triassic geologic time scale, Period in the geologic time scale, spanning the time between annum, Ma and Ma (million years ago). It is preceded by the Middle Triassic Epoch ...

of France and Britain. It contains three species: ''T. nikolai,'' ''T. rosieriensis'' and ''T. jenkinsi'', the former two of which are known exclusively from teeth found at the sand quarry of

Saint-Nicolas-de-Port Saint-Nicolas-de-Port () is a Communes of France, commune in the Meurthe-et-Moselle ''Departments of France, département'' in north-eastern France. The town's basilica, ''Saint-Nicolas, Saint-Nicolas-de-Port, Saint Nicolas'', is a pilgrimage sit ...

, while ''T. jenkinsi'' is known from a bedded sequence belonging to the

Westbury Formation The Westbury Formation is a geological formation in England, one of the Penarth Group. It dates back to the Rhaetian.Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Triassic, Europe)." In: Weishampel, David B.; Dodson, Peter; and ...

in a road cutting near

Holwell, Dorset Holwell is a village and civil parish in the county of Dorset in southern England, situated approximately south-east of Sherborne. It is sited on Oxford clay in the Blackmore Vale. Its name derives from the Old English ''hol'' and ''walu'', meani ...

. ''Theroteinus'' is the only member of the family Theroteinidae and the suborder Theroteinida.

References

Haramiyida Prehistoric cynodont genera Late Triassic synapsids of Europe Triassic England Triassic France Fossil taxa described in 1986 Taxa named by Denise Sigogneau‐Russell {{Paleo-therapsid-stub