Species: silantjevi GUBIN, 1993
Etymology: In honor of V. V. Silantjev, one of the collectors of the material.

Holotype: PIN 4416/15

Locality: Ust'-Koin Locality, left tributary of Vym’ River, 1.1 km below mouth of Koin River, Vychegda River Basin, Knyazhpogostskii District, Komi Republic, European Russia.

Horizon: Biarmian Series, Upper Kazanian Substage.

Biostratigraphy: Ocher Faunal Assemblage, Golyusherman Faunal Subassemblage.

Age: Lower Kazanian substage, Capitanian Stage, Upper Guadelupian Stage, Middle Zechstein Epoch, Late Middle Permian.

Material: Right branch of lower jaw.

Referred material:

PIN 4416/16, 17: Articulare.

PIN 4416/18, 24: Claviculare dextrum.

PIN 4416/19: Quadratojugale.

PIN 4416/20, 25: Jugalia.

PIN 4416/30: Sphenethmoideum.

PIN 4416/32: Interclavicula.