Where: Russian Federation (71.8° N, 127.2° E: paleocoordinates 66.1° N, 7.4° E)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Eonathorstites oleshkoi ammonoid zone, 11 Member (Ulakhan-Krest Formation), Ladinian (242.0 - 237.0 Ma)
• bed-level stratigraphic resolution
Environment/lithology: marine; lithified, concretionary, gray, green, argillaceous siltstone
•argillaceous siltstones with separate concretion interbeds
•of lump-like phosphorite-calcareous concretions. Also,
•lenses and interbeds (up to 0.15 m thick) of fine phos-
•phorite pebble conglomerates occur. Two conglomerate in-
•terbeds (localized 1.2 m apart) lie in the base of the bed.
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 124546: authorized by Martin Aberhan, entered by Daniel Wellmanns on 18.02.2012
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Cephalopoda | |
Grambergia olenekensis Popov 1961 ceratite
Lenotropites solitarius Popov 1961 ceratite | |
Timites involutus ceratite | |
"Parapopanoceras medium" = Amphipopanoceras medium
"Parapopanoceras medium" = Amphipopanoceras medium McLearn 1948 ceratite | |
Bivalvia | |
Panopea anabarica Kurushin 1992 clam | |
Neoschizodus kolymensis Bychkov et al. 1976 clam | |
Bakevellia (Maizuria) arctica Kiparisova 1937 oyster |