Ol`khovyi Creek Exp. K-1 (Ulakhan-Krest Formation 14 ( 17 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: Kendei Member (Ulakhan-Krest Formation), Anisian (247.2 - 242.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, coarse-grained, concretionary, gray, green, calcareous siltstone

• Dark-greenish-gray coarse-grained calcareous silt-

•stones with lumachelle interbeds (10–30 cm) with shells

•of bivalves, scaphopods, and rarer gastropods. In the up-

•per part of the bed, the rocks abound in spherical (1–2

•cm across) and, less often, loaf-like (0.5–0.7 m) calcare-

•ous 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 124673: authorized by Martin Aberhan, entered by Daniel Wellmanns on 20.02.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Scaphopoda
 Dentaliida - Dentaliidae
Dentalium sp. Linnaeus 1758 tusk shell
Bivalvia
 Pholadida - Pleuromyidae
 Carditida - Myophoricardiidae
Pseudocorbula sp. Philippi 1898 clam
 Trigoniida - Trigonodidae
Janaija praelonga Kiparisova 1937 clam
 Pectinida - Pectinoidae
Chlamys anscutella Bychkov et al. 1976 scallop
 Pectinida - Oxytomidae
Oxytoma sp. Meek and Hayden 1865 scallop
 Ostreida - Halobiidae
"Zittelihalobia sp." = Halobia (Zittelihalobia)
"Zittelihalobia sp." = Halobia (Zittelihalobia) Polubotko 1984 oyster