Species: tenuisfrons TATARINOV, 1999
Etymology: Latin, tenuis, “narrow”, and Latin, frons, “forehead”: Narrow forehead.

Holotype: PIN 2212/97

Locality: Kotel’nich locality, Kotel’nichskii District, Kirov Region, Eastern European Russia.

Horizon: Tatarian Series, Upper Severodvinian Substage, Severodvinian Horizon.

Biostratigraphy: Sokolki Faunal Assemblage, Kotelnich Faunal Subassemblage, Zone IV.

Age: Lowermost part of the Upper Tatarian Age, Lopingian Subepoch, upper Zechstein Epoch, Late Permian.

Material: Nearly complete skull.

Referred material:

PIN 2212/93: Preorbital skull fragment broken off at the level of one of the posterior (probably, second posterior) postcanies.