Also known as Kotel'nich; Volki, Volky; Vanyushonki

Where: Kirov, Russian Federation (58.2° N, 48.4° E: paleocoordinates 31.8° N, 40.5° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Deltavjatia vjatkensis other zone, Vanyushonki Member (Urpalov Formation), Early/Lower Severodvinian (265.0 - 252.3 Ma)

• Kotelnich Subassemblage of the Sokolki Assemblage; the early part of the Late Tatarian (early Severodvinian) (Golubev 2000; Benton 2012, Geology).

•

•"The geological age of the beds of the Kotelnitch locality is younger than that of the zone III (series I, acc. to Kassin --Urdzum series, acc. to A. N. Mazarovitich), and apparently they are synchronous with the lower horizons of Zone IV, or the Pareiasaurian zone, i. e., with the lower layers of the Sarmin series of Mazarovitch." (Efremov, 1940).

•"The detailed geology and stratigraphy of the locality was studied by Coffa (1997 [PhD Thesis]). He recognized the Urpalov Formation at the locality as consisting of four members (Fig. 2), the oldest of which - Vanyushonkov Member (arrow in Fig. 2) composed of red calcareous clays and mudstones yields remains of pareiasaurs. At present, the Vanyushonkov Member correlates to the middle of the Urpalov Formation, Kotel'nich Group, Vishkil'skiy Horizon, Upper Tatarian Stage of the Upper Permian (Coffa 1997). The old Severo-Dvinsky Horizon is no longer in usage due to nomenclature problems." (Kordikova & Khlyupin, 2001).

•Formation name, originally entered as >>Sarmin<<, which never was a lithostratigraphic term, was replaced by >>Urpalov<< (TL).

•Stratigraphic age originally entered as >>Rotliegendes-Zechstein<< was refined: The Kotelnich locality is Lower Severodvinskian according to Ivakhnenko (2008). The Kotelnich Subassemblage of the Sokolki Assemblage and the Deltavjatia vjatkensis Assemblage Zone are regarded as early Upper Severodvinian by Golubev (2005, New Mexico Mus. Nat. Hist. Sci. Bull. 30).

• formation-level stratigraphic resolution

Environment/lithology: terrestrial; brown, red, calcareous claystone and sandstone

Size class: macrofossils

Preservation: mold/impression, concretion

Collected by K. Grekhov, among others in 1935, 1999; reposited in the PIN

• The type material of Pareiasuchus vjatkensis and Anthodon rossicus was collected in 1935. The neonate Deltavjatia reported by Kordikova & Khlyupin (2001) was collected in 1999 by K. Grekhov.

•

•KPM = Kotel'nich Paleontological Museum (= KMR in Lee, 1997, 2000)

•UMZC = University Museum of Zoology, Cambridge, UK

Primary reference: A. Hartmann-Weinberg. 1937. Pareiasauriden als Leitfossilien [Pareiasaurids as guide fossils]. Problemy paleontologii 213:649-712 [J. Mueller/T. Liebrecht/T. Liebrecht]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 28854: authorized by John Alroy, entered by Robin Whatley on 25.02.2003, edited by Torsten Liebrecht, Marcus Walther, Richard Butler and Bethany Allen

Creative Commons license: CC BY (attribution)