Species: chalyshevi NOVIKOV & SHISHKIN, 1992
Etymology:

Holotype: PIN No. 4370/2

Locality: Right bank of Khey-Yaga River, 5 km downstream from mouth of Lestanshor Creek, Nenets National Reservation, Arkhangel's sk region, European Russia.

Horizon: Lowermost part of Nyadeytinskaya Formation.

Biostratigraphy:

Age: Anisian Stage, Lower Mid Triassic Epoch, Middle Triassic.

Material: Right branch of lower jaw.