Tsudakhar, Dagestan (Bajocian-Bathonian boundary layers) (Jurassic to of Russian Federation)

Where: Russian Federation (42.3° N, 47.2° E: paleocoordinates 37.7° N, 53.0° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Tsudakhar Formation, Late/Upper Bajocian to Late/Upper Bajocian (171.6 - 164.7 Ma)

• Middle Tsudakhar subformation, 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 187413: authorized by Matthew Clapham, entered by Matthew Clapham on 25.07.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ammonitida - Oppeliidae
Oxycerites (Oxycerites) plicatella Gemmellaro 1877 ammonite