Tashlydere Canyon, Bolshoi Balkhan (discus zone) (Jurassic of Turkmenistan)

Where: Turkmenistan (39.7° N, 54.4° E: paleocoordinates 36.2° N, 60.2° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• Middle part of Koshadjulba 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 187354: authorized by Matthew Clapham, entered by Matthew Clapham on 23.07.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ammonitida - Lissoceratidae
Lissoceras (Microlissoceras) minimum Djanelidze 1932 ammonite
 Ammonitida - Oppeliidae
 Ammonitida - Clydoniceratidae
"Clydoniceras (Clydoniceras) discus" = Clydoniceras discus
"Clydoniceras (Clydoniceras) discus" = Clydoniceras discus Sowerby 1813 ammonite