Ust'-Vashka, PIN 4541 (Permian to of Russian Federation)

Where: Arkhangelsk, Russian Federation (65.6° N, 44.6° E: paleocoordinates 34.0° N, 33.4° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Ennatosaurus tecton other zone, Late/Upper Kazanian to Late/Upper Kazanian (272.5 - 265.0 Ma)

• Upper Kazanian substage to lower Tatarian (= Urzhumian); Mezen Assemblage of the Dinocephalian Superassemblage (Golubev 2000)

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Reposited in the PIN

Primary reference: M. F. Ivakhnenko. 2003. Eotherapsids from the East European Placket (Late Permian). Paleontological Journal 37(Suppl. 4):S339-S465 [R. Butler/R. Butler]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 187653: authorized by Richard Butler, entered by Richard Butler on 07.08.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Parareptilia - Nycteroleteridae
Bashkyroleter mesensis1 Ivakhnenko 1997 parareptile
PIN 4541/3, 4541/4
 Parareptilia - Nyctiphruretidae
Nyctiphruretus acudens2 Efremov 1938 parareptile
PIN 4541/23
 Gorgodontia - Nikkasauridae
Reiszia tippula n. sp.3 Ivakhnenko 2000 reptile
PIN 4541/2
 Gorgodontia - Alrausuchidae
"Biarmosuchus tagax" = Alrausuchus tagax
"Biarmosuchus tagax" = Alrausuchus tagax Ivakhnenko 1990 reptile
PIN 4541/13
 Synapsida - Varanopidae
Mesenosaurus romeri3 Efremov 1938 synapsid
PIN 4541/8, 4541/15, 4541/22