Ol`khovyi Creek Exp. K-1 (Ulakhan-Krest Formation 7 (3,7 m)) (Triassic of Russian Federation)

Where: Russian Federation (71.7° N, 127.8° E: paleocoordinates 65.8° N, 13.3° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Pseudononosaria obconica foram zone, Ulakhan-Krest Formation, Anisian (247.2 - 242.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, concretionary, phosphatic mudstone and lithified, concretionary, gray, green, argillaceous siltstone

• Finely alternating dark-gray mudstones and tobacco-

•greenish-gray argillaceous siltstones. The bedding planes

•contain carbonized fine vegetal detritus. The rocks con-

•tain pyrite and calcareous concretions.

Size class: macrofossils

Primary reference: A. G. Konstantinov, E. S. Sobolev, and A. V. Yadrenkin. 2007. Detailed biostratigraphy of Triassic deposits in the Lena lower reaches(northern Yakutia). Russian Geology and Geophysics 48:721-736 [M. Aberhan/D. Wellmanns]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 124658: authorized by Martin Aberhan, entered by Daniel Wellmanns on 20.02.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Bivalvia
 Cardiida - Anthracosiidae
Unionites sp.
Unionites sp. Wissman 1841 clam
 Trigoniida - Myophoriidae
Neoschizodus sp.
Neoschizodus sp. Giebel 1855 clam
 Nuculanida - Malletiidae
Taimyrodon olenekensis
Taimyrodon olenekensis Kiparisova 1937 clam
Cephalopoda
 Ceratitida - Nathorstitidae
Indigirites sp.
Indigirites sp. Popov 1947 ceratite