NDLI: Early miocene rodents from the Aktau Mountains (South-Eastern Kazakhstan)

Content Provider	Springer Nature Link
Author	Kordikova, Elena G. Bruijn, Hans
Copyright Year	2001
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 ofKarydomys: 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 ofKarydomys dzerzhinskii, Sayimys aff.obliquidens and the tachyoryctoidine suggests an Early Miocene (MN4 rather than MN3) age for the assemblage.Die mittleren Anteile der Chul’adyr Formation enthalten sieben Arten von Nagetieren, die sechs (Sub-)Familien angehören. Der am häufigsten belegte Cricetide dieser Fauna wird einer neuen Gattung und einer neuen Art,Aktaumys dzhungaricus, und einer neuen Art,Karydomys dzerzhinskii, zugeordnet. Die anderen Nagetier-Taxa, ?Sinosminthus gen. et sp. indet.,Sayimys aff.obliquidens, Asiacastor aff.baschanovi und Tachyoryctoidinae gen. A, sp. 1, sind jeweils nur durch wenige Einzelzähne nachgewiesen (insgesamt 8% der gesamten Nagetier-Fauna). Die Zusammensetzung der Nagetier-Fauna stimmt mit den Faunen des Oligo-Miozäns Anatoliens zwar gut überein, nähere Verwandte eines Großteils der Arten finden sich jedoch in Zentralasien.Aufgrund der Evolutionsniveaus der TaxaKarydomys dzerzhinskii, Sayimys aff.obliquidens und tachyoryctoidine läßt sich die Fauna biostratigraphisch am ehesten ins Untermiozän (eher MN4 als MN3) einstufen.
Starting Page	391
Ending Page	405
Page Count	15
File Format	PDF
ISSN	00372110
Journal	Palaeobiodiversity and Palaeoenvironments
Volume Number	81
Issue Number	2
Language	German
Publisher	Springer-Verlag
Publisher Date	2001-01-01
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Mammalia rodents Cricetidae Tertiary Early Miocene Kazakhstan Aktau Mts Paleontology Biodiversity Animal Systematics/Taxonomy/Biogeography Plant Systematics/Taxonomy/Biogeography Freshwater & Marine Ecology
Content Type	Text
Resource Type	Article
Subject	Paleontology

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