Chanty-Argun River, Dagestan (Tsudakhar Fm) (Jurassic to of Russian Federation)

Where: Russian Federation (42.8° N, 45.6° E: paleocoordinates 37.9° N, 51.4° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• Upper Parkinsoni zone-lower Zigzag zone

• 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 188948: authorized by Matthew Clapham, entered by Matthew Clapham on 21.09.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ammonitida - Stephanoceratidae
Gonolkites crassum Nicolesco 1927 ammonite
 Ammonitida - Parkinsoniidae
Haselburgites datunense Besnosov 1993 ammonite