Also known as Setorym / upper Vostochnaya Khandyga river basin
Where: Sakha, Russian Federation (63.2° N, 139.2° E: paleocoordinates 73.9° N, 31.5° E)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Nekuchan Formation, Changhsingian (254.2 - 252.2 Ma)
• 3-4m above the base of the Nekuchan Formation
• bed-level stratigraphic resolution
Environment/lithology: marine; concretionary mudstone
Size classes: macrofossils, microfossils
Preservation: mold/impression
Collected in 2017
Primary reference: A. S. Biakov, R. V. Kutygin, N. A. Goryachev, S. S. Burnatny, A. N. Naumov, A. V. Yadrenkin, I. L. Vedernikov, M. F. Tretyakov, and I. V. Brynko. 2018. Discovery of the Late Changhsingian Bivalve Complex and Two Fauna Extinction Episodes in Northeastern Asia at the End of the Permian. Doklady Biological Sciences 480:78-81 [A. Dunhill/B. Allen]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 206758: authorized by Alex Dunhill, entered by Bethany Allen on 28.11.2019
Creative Commons license: CC BY (attribution)
Taxonomic list
| Foraminifera | |
| Cephalopoda | |
|
Otoceras sp. Griesbach 1880 ceratite | |
| Bivalvia | |
"Dacryomya sp." = Dacromya
"Dacryomya sp." = Dacromya Agassiz 1840 pointed nut clam | |
|
? Malletia sp. des Moulins 1832 clam | |
|
Palaeonucula aldanensis Kurushin 1987 nut clam | |
|
Unionites cf. canalensis Catullo 1847 clam | |
"Myalina aff. putiatinensis" = Promyalina putiatinensis
"Myalina aff. putiatinensis" = Promyalina putiatinensis Kiparisova 1938 clam | |
| Gastropoda | |
|
? Bellerophon sp. de Montfort 1808 snail | |