Species: kotelnitshi KURKIN, 2000
Etymology: In reference to the town of Kotelnich, Kirov Region, European Russia, near where the specimen was found.

Holotype: PIN 4678/2

Locality: Port Kotelnich locality, Kotelnichskii District, Vyatka River, Kirov Region, European Russia.

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

Biostratigraphy: Sokolki Faunal Assemblage, Kotelnich Faunal Subassemblage.

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

Material: Skull.

Referred material:

PIN 4678/11, KPM 18/92: Skull fragments.

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Species: platycephalus KURKIN, 2000
Etymology: Greek, platy, “wide” and Greek, cephalon, “head”: Wide head.

Holotype: PIN 4678/3

Locality: Port Kotelnich locality, Kotelnichskii District, Vyatka River, Kirov Region, European Russia.

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

Biostratigraphy: Sokolki Faunal Assemblage, Kotelnich Faunal Subassemblage.

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

Material: Skull.

Referred material:

PIN 4678/4, 4678/5, KPM 15/92, 30/97: Skulls.

PIN 4678/6: Skull fragment.