Where: Russian Federation (71.8° N, 127.2° E: paleocoordinates 65.6° N, 13.5° E)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Boreohungarites kharaulakhensis ammonoid zone, 12 Member (Ulakhan-Krest Formation), Anisian (247.2 - 242.0 Ma)
• bed-level stratigraphic resolution
Environment/lithology: marine; lithified, concretionary, gray, green, argillaceous siltstone
•granular, in the base) siltstones. The bed contains calcare-
•ous concretions, pyrite nodules, and interbeds and lenses
•of calcareous siltstones.
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 124552: authorized by Martin Aberhan, entered by Daniel Wellmanns on 18.02.2012
Creative Commons license: CC BY (attribution)
Taxonomic list
| Bivalvia | |
|
Daonella sp. Mojsisovics 1874 oyster | |
|
Bakevallia (Maizuria) arctica Kiparisova 1937 oyster | |
|
Neoschizodus kolymensis Bychkov et al. 1976 clam | |
|
Taimyrodon olenekensis Kiparisova 1937 clam | |
| Cephalopoda | |
|
Arctogymnites sonini Popov 1961 ceratite
Frechites nevadanus Mojsisovics 1888 ceratite | |
|
Parapopanoceras dzeginense Voinova 1947 ceratite | |
|
Indigirophyllites cf. popowi Konstantinov 1991 ammonite | |
|
Paranautilus smithi Kummel 1953 nautiloid | |
|
Arctonautilus egorovi Sobolev 1989 nautiloid | |