Where: Russian Federation (60.3° N, 149.3° E: paleocoordinates 84.3° N, 96.4° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Neosirenites pentastichus ammonoid zone, Tuvalian (232.0 - 221.5 Ma)
• group of beds-level stratigraphic resolution
Environment/lithology: marine; nodular, gray, silty mudstone and limestone
Size class: macrofossils
Primary reference: Y.u. M. Bychkov. 1977. [Sections of the Trias from the upper River Kolym and northern Priochotya]. [Transactions of the Institute of Geology and Geophysics, Siberian Branch of the Academy of Sciences of the USSR] 344:51-82 [A. Dunhill/B. Allen]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 214800: authorized by Alex Dunhill, entered by Bethany Allen on 16.10.2020
Creative Commons license: CC BY (attribution)
Taxonomic list
| Bivalvia | |
|
Halobia subfallax oyster
Halobia cf. praesuperba Kittl 1912 oyster
Halobia indigirensis Popov 1948 oyster | |
| Cephalopoda | |
|
Discophyllites sp. Hyatt 1900 ammonite | |
|
Proarcestes verchojanicus ceratite | |
Neosirenites pentastichus, Sirenites cf. betulinus, "Neosirenites cf. irregularis" = Sirenites irregularis, Sirenites cf. hayesi
Neosirenites pentastichus ceratite
Sirenites cf. betulinus Dittmar 1886 ceratite
"Neosirenites cf. irregularis" = Sirenites irregularis Kiparisova 1937 ceratite
Sirenites cf. hayesi Smith 1927 ceratite | |
|
Proclydonautilus cf. kiparisovae Popov 1939
Proclydonautilus aff. spirolobus Dittmar 1866 | |
|
Germanonautilus cf. cassianus von Mojsisovics 1882 | |