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; lenticular, gray, silty mudstone and argillaceous 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 214801: authorized by Alex Dunhill, entered by Bethany Allen on 16.10.2020

Creative Commons license: CC BY (attribution)