Kazanbulak Spring, Kugitangtau Range (top lower Baisun Fm) (Jurassic of Uzbekistan)

Where: Uzbekistan (37.6° N, 66.6° E: paleocoordinates 36.4° N, 72.4° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Clydoniceras discus ammonoid zone, Baisun Formation, Late/Upper Bathonian (167.7 - 164.7 Ma)

• Top of the lower Baisun Svita

• 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 187355: authorized by Matthew Clapham, entered by Matthew Clapham on 23.07.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ammonitida - Clydoniceratidae
"Clydoniceras (Clydoniceras) discus" = Clydoniceras discus
"Clydoniceras (Clydoniceras) discus" = Clydoniceras discus Sowerby 1813 ammonite
 Ammonitida - Perisphinctidae
"Subgrossouvria sp." = Choffatia, Subgrossouvria hodjaikanensis n. sp., "Homoeoplanulites (Parachoffatia) arisphinctoides" = Choffatia arisphinctoides, Homoeoplanulites (Homeoplanulites) rambertensis
"Subgrossouvria sp." = Choffatia ammonite
Subgrossouvria hodjaikanensis n. sp. Besnosov 1993 ammonite
"Homoeoplanulites (Parachoffatia) arisphinctoides" = Choffatia arisphinctoides Arkell 1958 ammonite