Dzhangi (Oligocene of Azerbaijan)

Also known as Djenghi, Dzhengichai

Where: Azerbaijan (40.5° N, 49.3° E: paleocoordinates 41.0° N, 46.0° E)

• coordinate estimated from map

When: Maikop Group, Rupelian (33.9 - 28.1 Ma)

• Maikop Group, most likely Lower Mai- kop beds, which are uppermost Rupelian or lowermost Chattian in age. Riabinin (1938) reported the holotype of Mirocetus as having come from the upper Maikop beds; however, Mchedlidze (1964) attributes this to two errors by Riabinin (1938): (1) he did not recognize that cetaceans are derived from multiple levels in the Maikop Group and (2) he assumed that the holotype of Mir- ocetus came from the most productive horizon, which is either latest Oligocene or earliest Miocene in age.

•(Sanders & Geisler, 2015).

Environment/lithology: marine; claystone

• a bed with alternating greenish-brown, greenish-gray and chocolate-brown clays

Size class: macrofossils

Preservation: original phosphate

Primary reference: A. Riabinin. 1938. Microzeuglodon aff. caucasicum Lyd. from the Upper Maikop beds of Kabristan. Problems of Paleontology 4:137-185 [M. Uhen/M. Uhen/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 45740: authorized by Mark Uhen, entered by Mark Uhen on 30.11.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Lamniformes - Lamnidae
Lamna sp. Cuvier 1816 mackerel shark
Actinopteri
 Scombriformes - Scombridae
Scombridae indet. Rafinesque 1815
Cybium sp. Cuvier 1829
 Scombriformes - Trichiuridae
Lepidopus sp. Gouan 1770
Mammalia
 Cetacea - Mirocetidae
Mirocetus riabinini n. gen. n. sp.
Mirocetus riabinini n. gen. n. sp. Mchedlidze 1970 toothed whale