Genus: Alrausuchus IVAKHNENKO, 2008
Etymology:
Species: tagax (IVACHENKO, 1990) IVAKHENKO, 2008 (Type)
= Biarmosuchus tagax IVACHNENKO, 1990
Etymology: Latin, tagax, "touch."
Holotype: PIN 3706/10
Locality: Peza-1 (Pyoza-1), Peza River, right tributary of Mezen' River, Arkhangelska Region, Mezenskii (Mezen) District, European Russia.
Horizon: Biarmian Series, Upper Kimzha beds, Urzhumian Stage, Urzhumian Horizon.
Biostratigraphy: Mezen Faunal Assemblage.
Age: Lower Tatarian Age, Lopingian Subepoch, upper Zechstein Epoch, Late Permian.
Material: Fragmentary skull.
Referred material:
PIN 3706/17: Left dentary.
Locality: Ust’Peza (Ust-Pyoza), Arkhangelsk Region, Mezenskii (Mezen) District, Arkhangel'sk Region, Russia.
Horizon: Biarmin Series, Urzhumina Stage, Urzhumian Horizon, Upper Kimzha beds.
Biostratigraphy: Mezen Faunal Assemblage.
Age: Lower Tatarian Age, Capitanian Stage, Middle Zechstein Epoch, Late Middle Permian.
Material:
PIN 3586/6: Partial skull.
PIN 3586/12: Symphysial part of lower jaw.
PIN 3586/14: Partial dentary.
IVACHNENKO, 1999
Locality: Ust-Vashka Locality, Leshukonskii District, Arkhangelsk Region, European Russia.
Horizon: Krasnoshchel’ya Formation, Biarmian Series, Urzhumian Stage, Urzhumian Horizon.
Biostratigraphy: Mezen Faunal Assemblage.
Age: Lower Tatarian Age, Capitanian Stage, Middle Zechstein Epoch, Late Middle Permian.
Material:
PIN 4541: A parietal.
IVAKHNENKO, 2008b
Locality: Glyadnaya Shchel’ya locality, Mezenskii District, Arkhangelsk Region, European Russia.
Horizon: Krasnoshchel’ya Formation, Urzhumian Horizon.
Biostratigraphy: Mezen Faunal Assemblage.
Age: Lower Tatarian Age, Capitanian Stage, Middle Zechstein Epoch, Late Middle Permian.
Material: Not given.
Locality: Kosmogorodsko'e Locality, Mezenskii District, Arkhangelsk Region, European Russia.
Horizon: Biarmian Series, Urzhumian Stage, Urzhumian Horizon.
Biostratigraphy: Mezen Faunal Assemblage.
Age: Lower Tatarian Age, Capitanian Stage, Middle Zechstein Epoch, Late Middle Permian.
Material:
PIN 4659/8: Partial skull.