Also known as Kamennyi, Kamenny Valley, Yumrala Ravine, Sviaga River, Sviyaga River, Isheevo, Tartarstan, PIN coll. no. 157

Where: Tatarstan, Russian Federation (55.1° N, 48.5° E: paleocoordinates 29.3° N, 43.3° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Late/Upper Urzhumian to Late/Upper Urzhumian (268.0 - 265.0 Ma)

• Zone II?, "Tapinocephalus Zone";

•"Early Tatarian" (Battail & Surkov, 2000)

• bed-level stratigraphic resolution

Environment/lithology: fluvial; red sandstone and red mudstone

Size class: macrofossils

Collected by I. A. Efremov in 1934, 1935; reposited in the PIN

Collection methods: quarrying,

• "[...] we have employed the method of laying vast (up to 250 sq. mt.) grounds [...] for exposing the bone-bearing layer. This method proved to be quite satisfactory, as during the two seasons of excavating works (of 1934 and 1935) we have succeeded in obtaining of two practically complete skeletons of carnivorous Deinocephalians and of one skeleton of a herbivorous Deinocephalian. Unfortunately, this latter was embedded at the boundary of the layer of bone-bearing sands, just under the train of deluvial deposits, and was distorted by the landslip and subterranian waters to such an extent, that in spite of the extremely accurate preparation performed, we have succeeded to pick out from the matrix rock only the skull with a few vertebrae, and some ribs." (Efremov, 1940).

Primary reference: J. A. Efremov. 1940. Preliminary description of the new Permian and Triassic Tetrapoda from USSR . Academie des Sciences De L'Union Des Republiques Sovietiques Socialistes 10:93-140 [J. Alroy/R. Whatley/R. Whatley] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 27931: authorized by John Alroy, entered by Robin Whatley on 17.01.2003, edited by Torsten Liebrecht

Creative Commons license: CC BY-NC-ND (attribution-noncommercial-no derivatives)