Ruthenosaurus

Ruthenosaurus is an extinct genus of large caseid synapsid from middle Early to early Late Permian (upper Sakmarian to lower Lopingian) deposits of Southern France. It is known from the holotype MNHN.F.MCL-1 a partial postcranial skeleton. It was collected by D. Sigogneau-Russell and D. Russell in the 1970s from the base of the Grès Rouge Group, near the town of Valady (département of Aveyron), Rodez Basin. It was first named by Robert R. Reisz, Hillary C. Maddin, Jörg Fröbisch and Jocelyn Falconnet in 2011 and the type species is Ruthenosaurus russellorum.