Also known as Ayakoz

Where: Kazakhstan (50.4° N, 80.3° E: paleocoordinates 51.1° N, 79.1° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Aquitanian to Aquitanian (23.0 - 16.0 Ma)

• Boundary between the Aquitanian and Burdigalian, MN3/MN4

•The Ayakoz clays are characterized by the presence of Tachyorictoididae, Parasminthus tongingoli, Asiacastor antecedens, and Eucricetodon cf. sajacensis, i.e., by typical early Miocene rodent species. On the other hand, typical Oligocene cylindrodontids are absent from the Ayakoz fauna (Tjutkova in press). In addition, there are some early Miocene components in a floristic complex as well, such as Lychnothamnus cf. miranda. Thus, the age of the Ayakoz should be referred to as MN 4-5

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; green, sandy claystone

Size class: macrofossils

Collected by N.S. Shevyreva and V.M. Chkhikvadze in 1980; reposited in the PIN

Primary reference: A. V. Lopatin. 2004. New Early Miocene Shrews (Soricidae, Mammalia) from Kazakhstan. Paleontological Journal 38(2):211-219 [P. Mannion/P. Mannion]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 64355: authorized by Mark Uhen, entered by Mark Uhen on 06.09.2006, edited by Philip Mannion and Evangelos Vlachos

Creative Commons license: CC BY (attribution)