Abstract
The rodent assemblage from the Middle Members of the Chul'adyr Formation contains seven species that belong to six (sub)families. The dominant Cricetidae are represented by a new genus and species: Aktaumys dzhungaricus and by a new species of Karydomys: K. dzerzhinskii. Each of the other rodent species: ?Sinosminthus gen. et sp. indet., Sayimys aff. obliquidens, Asiacastor aff. baschanovi and Tachyoryctoidinae gen. A, sp. 1, is represented by a few cheek teeth only (altogether 8% of the specimens). The composition of the assemblage resembles Oligo-Miocene material from Anatolia, but the closest relatives of most of the species are found in Central Asia. The stage of evolution of Karydomys dzerzhinskii, Sayimys aff. obliquidens and the tachyoryctoidine suggests an Early Miocene (MN4 rather than MN3) age for the assemblage.
| Original language | English |
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| Pages (from-to) | 391-405 |
| Number of pages | 15 |
| Journal | Senckenbergiana Lethaea |
| Volume | 81 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2001 |
Funding
The field assistance of M. R. DE BRUIJN and A.E. DE BRUIJN-DUDAKV AN HEEL is appreciated. Mr. W. A. oeN HAR-TOG made the S.E.M. photos, Mr. J. LUTEIJN retouched the photos and drew the dipodid teeth and Mrs. M. J. W. VAN WIJK (Institute of Earth Sciences, University of Utrecht) typed and edited the manuscript. This study was partly supported by the DAAD grant.
| Funders |
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| Deutscher Akademischer Austauschdienst |
Keywords
- Aktau Mts.
- Cricetidae
- Early Miocene
- Kazakhstan
- Mammalia
- Rodents
- Tertiary