Chaloi Well, Bolshoi Balkhan (lower Chaloi Fm) (Jurassic of Turkmenistan)

Where: Turkmenistan (39.8° N, 54.4° E: paleocoordinates 36.7° N, 60.5° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Chaloi Formation, Subfurcatum (171.6 - 167.7 Ma)

• Lower Chaloi Fm

• 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 187369: authorized by Matthew Clapham, entered by Matthew Clapham on 24.07.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ammonitida - Lissoceratidae
"Lissoceras (Lissoceras) oolithicum" = Lissoceras oolithicum
"Lissoceras (Lissoceras) oolithicum" = Lissoceras oolithicum d'Orbigny 1846 ammonite
 Ammonitida - Oppeliidae
Oppelia (Oppelia) pleurifer Buckman 1924 ammonite
Oppelia (Oppelia) subradiata d'Orbigny 1823 ammonite
Oppelia (Oecotraustes) westermanni Stephanov 1966 ammonite
 Ammonitida - Perisphinctidae
 Ammonitida - Sphaeroceratidae
Sphaeroceras brongniarti Sowerby 1818 ammonite
 Ammonitida - Stephanoceratidae
Rarecostites rarecostatum Buckman 1881 ammonite
Orthogarantiana (Torrensia) sp. Sturani 1971 ammonite