Dzhagadzur, Bed 29, Transcaucasia (Permian of Armenia)

Where: Armenia (39.7° N, 45.2° E: paleocoordinates 8.4° S, 41.4° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Arpa Formation, Wordian (268.8 - 265.1 Ma)

• 9 m thick.

•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 classes: macrofossils, microfossils

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 97392: authorized by Matthew Clapham, entered by Matthew Clapham on 24.07.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Foraminifera
 Lagenina -
 Ammodiscoidea - Ammodiscidae
Glomospira "sp. 1" Rzehak 1895
Tubothalamea
 Miliolida - Cornuspiridae
 Miliolida - Hemigordiopsidae
Foraminifera
 Endothyroidea - Bradyinidae
 Endothyroidea - Endothyridae
 Fusulinoidea - Schwagerinidae
 Palaeotextularoidea - Biseriamminidae
Anthozoa
 Stauriida - Yatsengiidae
Lasmophyllum giganteum n. sp. Kropatcheva 1989 horn coral
 Stauriida - Waagenophyllidae