Ol`khovyi Creek Exp. K-1 (Ulakhan-Krest Formation 3 (5,3 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: Daonella americana zone, Ulakhan-Krest Formation, Anisian (247.2 - 242.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, concretionary, gray mudstone

• Dark-gray mudstones with interbeds of calcareous

•and phosphorite concretions. At 5.3 m from the base,

•there is a lumachelle interbed (5–20 cm thick) composed

•of bivalve shells and rare phosphorite pebble.

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 124650: 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
 Pectinida - Oxytomidae
Meleagrinella tasaryensis
Meleagrinella tasaryensis Voronetz 1936 scallop
 Ostreida - Bakevelliidae
Bakevellia (Maizuria) arctica, Hoernesia torta
Bakevellia (Maizuria) arctica Kiparisova 1937 oyster
Hoernesia torta Popov 1964 oyster
 Pholadida - Ceratomyidae
Gresslya abundans, Gresslya bisulcata
Gresslya abundans Kurushin 1998 clam
Gresslya bisulcata Popov 1964 clam
 Nuculanida - Malletiidae
Taimyrodon olenekensis
Taimyrodon olenekensis Kiparisova 1937 clam
Cephalopoda
 Ceratitida - Ceratitidae
Frechites chischeformis
Frechites chischeformis Konstantinov 1991 ceratite
Lingulata
 Lingulida - Lingulidae
Lingula olenekensis