Species: bashkyricus (EFREMOV, 1940) IVACHNENKO, 1997
Etymology:
= Nycteroleter bashkyricus EFREMOV, 1940

Holotype: PIN 164/3

Locality: Belebey, Southern Cis-Urals, European Russia.

Horizon:

Biostratigraphy:

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

Material: Fragmentary skull and fragmentary skeleton.

Referred material:

PIN 164/60: Fragmentary skull.

PIN 164/4: Skeleton.

_____________________________________________________________________________________

Species: mesensis IVACHNENKO, 1997
Etymology: In reference to the Mezen’ River.

Holotype: PIN 162/30

Locality: Glyadnaya Shchel’ya Locality, the lower reaches of the Mezen’ River, Arkhangelsk Region, European Russia.

Horizon:

Biostratigraphy:

Age: Lower Tatarian Age, Lopingian Subepoch, upper Zechstein Epoch, Late Permian.

Material: Almost complete skull.

Referred material:

Locality: Peza-1, Arkhangelska Region, European Russia.

Horizon:

Biostratigraphy:

Age: Lower Tatarian Age, Lopingian Subepoch, upper Zechstein Epoch, Late Permian.

Material:

PIN 3706/5: A partial shield.

 

Locality: Ust’-Peza, Archangelska Region, European Russia.

Horizon:

Biostratigraphy:

Age: Lower Tatarian Age, Lopingian Subepoch, upper Zechstein Epoch, Late Permian.

Material:

PIN 3586/17: The left half of a skull.

 

Locality: Ust’-Nyafta, Archangelska Region, European Russia.

Horizon:

Biostratigraphy:

Age: Lower Tatarian Age, Lopingian Subepoch, upper Zechstein Epoch, Late Permian.

Material:

PIN 3717/27: An incomplete skull.

 

Locality: Ust’-Vashka, Archangelska Region, European Russia.

Horizon:

Biostratigraphy:

Age: Lower Tatarian Age, Lopingian Subepoch, upper Zechstein Epoch, Late Permian..

Material:

PIN 4541/3: Anterior part of a juvenile skull.

PIN 4541/4: The partial shield.