Where: Russian Federation (71.7° N, 127.8° E)
• Paleocoordinates: 77.2° N, 50.5° E (Wright 2013)
• 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
•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 124649: authorized by Martin Aberhan, entered by Daniel Wellmanns on 20.02.2012
Creative Commons license: CC0 (CC0)
Taxonomic list
| Cephalopoda | |
|
Atractites sp. Guembel 1861 belemnite | |
|
Indigirophyllites popowi Konstantinov 1991 ammonite | |
|
Arctogymnites sonini Popov 1961 ceratite
Arctogymnites clivosus Bychkov and Vavilov 1982 ceratite | |
|
Parapopanoceras dzeginense Voinova 1947 ceratite | |
|
Sibyllonautilus orientalis Sobolev 1989
Arctonautilus sp. Sobolev 1989 | |
| Bivalvia | |
|
Taimyrodon olenekensis Kiparisova 1937 clam | |
|
Daonella americana Smith 1914 oyster | |
|
Hoernesia cf. torta Popov 1964 oyster
Bakevellia (Maizuria) sp. Nakazawa 1959 oyster | |
|
Meleagrinella tasaryensis Voronetz 1936 scallop | |
|
Panopea ex gr. anabarica Kurushin 1992 clam | |
|
Gresslya abundans Kurushin 1998 clam | |
| Lingulata | |
|
Lingula olenekensis Dagys 1965 | |