Where: Russian Federation (71.8° N, 127.2° E)
• Paleocoordinates: 78.7° N, 49.4° E (Wright 2013)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Indigirites krugi ammonoid zone, 13 Member (Ulakhan-Krest Formation), Ladinian (242.0 - 237.0 Ma)
• bed-level stratigraphic resolution
Environment/lithology: marine; lithified, lenticular, concretionary, argillaceous mudstone
•dispersed spherical concretions. There are also lenses (in
•the lower part of the bed) and 1–5 cm thick partings (in
•the upper part) rich in echinoid spines.
•
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 124558: authorized by Martin Aberhan, entered by Daniel Wellmanns on 18.02.2012
Creative Commons license: CC0 (CC0)
Taxonomic list
| Cephalopoda | |
|
Indigirites krugi Popov 1946 ceratite | |
|
Sibyllonautilus aff. artus Sobolev 1989 | |
|
Gryponautilus kegalensis Sobolev 1989 | |
| Bivalvia | |
|
Hoernesia kularensis oyster
Bakevellia (Maizuria) ladinica Kurushin 1980 oyster | |
|
Meleagrinella tasaryensis Voronetz 1936 scallop | |