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: Janaija praelonga other zone, Ulakhan-Krest Formation, Anisian (247.2 - 242.0 Ma)
• bed-level stratigraphic resolution
Environment/lithology: marine; lithified, fine-grained, concretionary, gray sandstone
•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 124667: authorized by Martin Aberhan, entered by Daniel Wellmanns on 20.02.2012
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
Falcimytilus nasai Kobayashi and Ichikawa 1950 mussel | |
Oxytoma gussevi scallop | |
Pseudocorbula pseudogregaria Kurushin 1992 clam | |
Janaija nikolaevi Kurushin 1987 clam
Janaija praelonga Kiparisova 1937 clam | |
Cardinioides fidus Kurushin 1990 clam | |
Scaphopoda | |
Dentalium sp. Linnaeus 1758 tusk shell |