Species: massiva NOVIKOV, 1991
Etymology: Latin, massivus, "massive."

Holotype: PIN 4370/4

Locality: 3.5 km above mouth of Lestanshor Creek, right bank of Khey-Yaga River, Nenetskiy National Reservation, Arkhangel’sk Province, Cis-Urals, European Russia.

Horizon: Lower subformation of Lestanshor Formation, uppermost part of Vetluga superhorizion(?).

Biostratigraphy:

Age: Early Triassic.

Material: Left dentary bone.