Species: praeventor CHUDINOV, 1960
Etymology:

Holotype: PIN 1758/3

Locality: Ezhovo locality (Yezhovo settlement), Ochersky area, Ocherskii (Otcher) District, Permian (Perm) region, European Russia.

Horizon: Biarmian Series.

Biostratigraphy: Ocher Faunal Assemblage, Ocher Faunal Subassemblage, Zone 1.

Age: Upper Kazanian Substage, Lower Tatarian Age, Capitanian Stage, Middle Zechstein Epoch, Late Middle Permian.

Material: Fragmentary skull.

Referred material:

CHUNDINOV, 1983

PIN 1758/293: A laterally crushed but laterally crushed but not nearly complete skull missing part of the temporal arches.

PIN 1758/294: The symphysela region of a left dentary.

PIN 1758/295: A partial left dentary.

PIN 1758/296: A right maxilla.

PIN 1758/309: A series of palatal fragments including a well pereseved pterygoid boss.

PIN 1758/310: A fragmentary skull.

PIN 1758/311: An isolated parietal region fo a skull roof.

PIN 1758/312: A right maxila.

PIN 1758/313: A left maxilla.

PIN 1758/314: A nearly complete right dentary.

PIN 1758/316: A fragmentary left maxilla with canine.

PIN 1758/317: A fragmentary left maxilla with canine.

PIN 1758/318: A left maxilla.

IVACHNENKO, 1995

PIN 1758/94, /93: Skulls.

IVACHNENKO, 2008b

PIN 1758/95: A laterally crushed but nearly compelte skull missing the occipital region.

PIN 1758/118: Left maxillary.

PIN 1758/297: A nearly complete left dentary.

PIN 1758/315: A left canine.

PIN 1758/328: Right dentary.