Species: mirus NOVIKOV, 1990
Etymology: Latin, mirus, "strange."

Holotype: PIN 3360/9

Locality: 6 km from the mouth of the left bank of Vybor River, left tributary of Menzen' River, Leshukonskiy District, Arkhangel'sk Region, northeastern European Russia.

Horizon: Pizhma Mezenskaya Formation, near the top of Ust’-Mylian horizon, Pizhmomensk Series.

Biostratigraphy:

Age: Early Triassic.

Material: Posterior half of left branch of lower jaw.

Referred material:

PIN 3360/11: Right jugal.

Locality: Pizhma'I locality, 6 km from the mouth of the left bank of Vybor River, left tributary of Menzen' River, Leshukonskiy District, Arkhangel'sk Region, European Russia.

Horizon: Pizhma Mezenskaya Formation, near the top of Sludkinkiy Horizon.

Biostratigraphy:

Age: Early Triassic.

Material:

PIN 4364/1, 2: Occipital part of left half of skull and right lacrimale.

 

Locality: Tsil'ma-I locality, 6 km from the mouth of the left bank of Vybor River, left tributary of Menzen' River, Leshukonskiy District, Arkhangel'sk Region, European Russia.

Horizon: Pizhma Mezenskaya Formation, near the top of Sludkinkiy Horizon.

Biostratigraphy:

Age: Early Triassic.

Material:

PIN 4333/8: Fragment of right half of base of skull.

 

Locality: Ni'ma-III locality, 6 km from the mouth of the left bank of Vybor River, left tributary of Menzen' River, Leshukonskiy District, Arkhangel'sk Region, European Russia.

Horizon: Pizhma Mezenskaya Formation, near the top of Sludkinkiy Horizon.

Biostratigraphy:

Age: Early Triassic.

Material:

PIN 4363/1: Posterior section of left branch of lower jaw.

Locality: Nizhnyaya Syamzhen' ga-III locality, 6 km from the mouth of the left bank of Vybor River, left tributary of Menzen' River, Leshukonskiy District, Arkhangel'sk Region, European Russia.

Horizon: Pizhma Mezenskaya Formation, near the top of Sludkinkiy Horizon.

Biostratigraphy:

Age: Early Triassic.

Material:

PIN 3359/27: Posterior section of right branch of lower jaw.