Datuna, Dagestan (middle Tsudakhar Fm) (Jurassic to of Russian Federation)

Where: Russian Federation (42.5° N, 46.6° E: paleocoordinates 37.7° N, 52.5° 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 187367: authorized by Matthew Clapham, entered by Matthew Clapham on 24.07.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ammonitida - Stephanoceratidae
Parkinsonia pseudoplanulata Besnosov 1993 ammonite
"Gonolkites pseudoferrugineus" = Parkinsonia (Durotrigensia) pseudoferruginea Nicolesco 1928 ammonite
 Ammonitida - Perisphinctidae
Prorsisphinctes (Prorsisphinctes) intersertus, "Prorsisphinctes ex gr. costulatosus" = Lobosphinctes costulatosus, "Prorsisphinctes (Prorsisphinctes) loczyi" = Lobosphinctes loczyi, "Prorsisphinctes (Planisphinctes) tenuissimus" = Planisphinctes tenuissimus
"Prorsisphinctes ex gr. costulatosus" = Lobosphinctes costulatosus Buckman 1923 ammonite
"Prorsisphinctes (Prorsisphinctes) loczyi" = Lobosphinctes loczyi Papp 1907 ammonite
"Prorsisphinctes (Planisphinctes) tenuissimus" = Planisphinctes tenuissimus Siemiradzki 1898 ammonite
 Ammonitida - Lissoceratidae
Lissoceras (Lissoceras) psilodiscus Schloenbach 1865 ammonite