Where: Russian Federation (42.6° N, 46.3° E: paleocoordinates 37.8° N, 52.1° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Tsudakhar Formation, Parkinsoni to Parkinsoni (171.6 - 164.7 Ma)

• Middle Tsudakhar subsvita, Bajocian-Bathonian boundary beds

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified lithology not reported

Size class: macrofossils

Collection methods: Repository: Vserossiyskiy Nauchno-Issledovatel'skiy Geologicheskiy Neftyanoy Institut (VNIGRI)

Primary reference: N. V. Besnosov and V. V. Mitta. 1993. Pozdnebayosskie i Batskie Ammonitidy Severnogo Kavkaza i Sredney Azii 1-347 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 188457: authorized by Matthew Clapham, entered by Matthew Clapham on 01.09.2017

Creative Commons license: CC BY (attribution)