Karabaglyar-4, Bed 17 (Permian of Azerbaijan)

Where: Azerbaijan (39.5° N, 45.2° E: paleocoordinates 8.6° S, 41.5° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Arpa Formation, Wordian (266.9 - 264.3 Ma)

• Basal unit of the Midian stage of the Tethyan timescale. Kotlyar et al. (1989) identified two fusulinid zones, the lower Yangchienia thompsoni and the upper Chusenella abichi. In central Iran, Chusenella abichi occurs with Neoschwagerina margaritae (Leven, 1998), suggesting a Wordian age for the entire Arpa Formation.

• group of beds-level stratigraphic resolution

Environment/lithology: lithified limestone

Size class: macrofossils

Primary reference: G. V. Kotlyar, Y.u. D. Zakharov, G. S. Kropatcheva, G. P. Pronina, I. O. Chedija and V. I. Burago. 1989. Evolution of the latest Permian biota: Midian regional stage in the USSR 1-184 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 133273: authorized by Matthew Clapham, entered by Matthew Clapham on 08.09.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Rhynchonellata
 Athyridida - Athyrididae
Strophomenata
 Productida - Productellidae
Ogbinia dzhagrensis Sarycheva 1965
 Productida - Aulostegidae
Chonostegoides armenicus Sarycheva 1965