Akhvakhshtab, Dagestan (upper Tsudakhar Fm) (Jurassic of Russian Federation)

Where: Russian Federation (42.6° N, 46.3° E: paleocoordinates 37.7° N, 52.0° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Zigzag ammonoid zone, Tsudakhar Formation, Early/Lower Bathonian (167.7 - 164.7 Ma)

• Upper Tsudakhar subsvita

• 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 188942: authorized by Matthew Clapham, entered by Matthew Clapham on 21.09.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ammonitida - Stephanoceratidae
"Parkinsonia (Gonolkites) arbatovi n. sp." = Gonolkites arbatovi
"Parkinsonia (Gonolkites) arbatovi n. sp." = Gonolkites arbatovi Kutuzova 1975 ammonite
 Ammonitida - Parkinsoniidae
"Oraniceras wuerttembergicus" = Parkinsonia (Oraniceras) wuerttembergica
"Oraniceras wuerttembergicus" = Parkinsonia (Oraniceras) wuerttembergica Oppel 1857 ammonite