''Theroteinus'' is an extinct genus of haramiyidan

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 comm ...

s from the

Late Triassic The Late Triassic is the third and final epoch of the Triassic Period in the geologic time scale, spanning the time between Ma and Ma (million years ago). It is preceded by the Middle Triassic Epoch and followed by the Early Jurassic 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 commune in the Meurthe-et-Moselle ''département'' in north-eastern France. The town's basilica, '' Saint Nicolas'', is a pilgrimage site, supposedly holding relics of Saint Nicholas brought from Italy. It is one of ...

, while ''T. jenkinsi'' is known from a bedded sequence belonging to the Westbury Formation in a road cutting near Holwell, Dorset. ''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