Peza-1, PIN 3706, Lower Mezen' River (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 187645: authorized by Richard Butler, entered by Richard Butler on 07.08.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Lanthanosuchoidea - Lanthaniscidae
Lanthaniscus efremovi n. gen. n. sp.1
Lanthaniscus efremovi n. gen. n. sp.1 Ivakhnenko 1980 parareptile
PIN 3706/9 (type)
 Parareptilia - Nycteroleteridae
Bashkyroleter mesensis1 Ivakhnenko 1997 parareptile
PIN 3706/5
Nycteroleter ineptus1 Efremov 1938 parareptile
PIN 3706/15
 Gorgodontia - Niaftasuchidae
Niaftasuchus sp. Ivakhnenko 1990 reptile
PIN 3706/16, skull
 Gorgodontia - Alrausuchidae
"Biarmosuchus tagax n. sp." = Alrausuchus tagax
"Biarmosuchus tagax n. sp." = Alrausuchus tagax Ivakhnenko 1990 reptile
PIN 3706/10 (type)
Osteichthyes
 Synapsida - Varanopidae
Mesenosaurus romeri2 Efremov 1938 synapsid
PIN 3706/11, 3706/15, 3706/21, 3706/26, 3706/28, 3706/34, 3706/48, 3706/56, 3706/57