Kanavchay Gorge, section 14, unit 7, western Kopetdag (Cretaceous of Turkmenistan)

Where: Turkmenistan (38.8° N, 55.5° E: paleocoordinates 32.9° N, 51.5° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Mantelliceras mantelli ammonoid zone, Early/Lower Cenomanian (99.6 - 93.5 Ma)

• Unit 7, 5 m above the bottom of horizon 2

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

Size class: macrofossils

Collection methods: Repository: Central Geological and Prospecting Museum, St. Petersburg (TsGM)

Primary reference: A. A. Atabekyan. 1985. Turrilitidy pozdnego Al'ba i Cenomana yuga SSSR. Akademiya Nauk SSSR, Ministerstvo Geologii SSSR, Mezhvedomstvennyy Stratigraficheskiy Komitet SSSR, Trudy 14:1-111 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 186615: authorized by Matthew Clapham, entered by Matthew Clapham on 28.06.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Ammonitida - Turrilitidae
"Mariella (Mariella) cenomanensis" = Mariella cenomanensis, Mariella (Mariella) thomsoni, "Mariella (Mariella) bicarinata" = Mariella bicarinata
"Mariella (Mariella) cenomanensis" = Mariella cenomanensis Schluter 1876 ammonite
Mariella (Mariella) thomsoni Henderson 1973 ammonite
"Mariella (Mariella) bicarinata" = Mariella bicarinata Kner 1852 ammonite