Mount Islamdag, Eastern Slope, Maikop Group, member 1 & 2, Chattian (Oligocene of Azerbaijan)

Where: Azerbaijan (40.5° N, 49.5° E: paleocoordinates 41.1° N, 47.1° E)

• coordinate estimated from map

When: 12 Member, Chattian (28.1 - 23.0 Ma)

• member-level stratigraphic resolution

Environment/lithology: marine; brown claystone and marl

• dark chocolate clays ferruginate at the weathered surface, bearing jarosite and gypsum

Size class: macrofossils

Preservation: original phosphate

Collection methods: surface (in situ)

Primary reference: S. V. Popov, E. K. Sychevskaya, M. A. Akhmet'ev, N. I. Zaporohets, and L. A. Golovina. 2008. Stratigraphy of the Maikop Group and Pteropoda Beds in Northern Azerbaijan. Stratigraphy and Geological Correlation 16(6):664-677 [M. Uhen/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 116632: authorized by Mark Uhen, entered by Mark Uhen on 10.09.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

 Gadiformes - Merlucciidae
Merluccius sp. Rafinesque 1810
 Clupeiformes - Clupeoidei
Sardinella sp. Cuvier and Valenciennes 1847 hering
Crassosphaera sp. Cookson and Manum 1960
 Life -
Cymatiosphaera sp. Wetzel and Deflandre 1954 acritarcs
Leiosphaeridia sp. Eisenack 1958 acritarcs