Раннемиоценовые грызуны Актау ЮВ Казахстана

      Kordikova, E.G. & Bruijn, de, H. 2001. Early Miocene rodents from the Aktau Mountains (South-Eastern Kazakhstan). - Senckenbergiana lethaea, 81, 2: 391-405.
     Elena G. Kordikova & Hans de Bruijn, 2001. Untermiozaene Rodentia vom Aktau-Gebirge (Suedost-Kazakhstan). - Senckenbergiana lethaea, 81, 2: 391-405.

https://link.springer.com/article/10.1007/BF03042791

https://doi.org/10.1007/BF03042791

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.

Kurzfassung
Die mittleren Anteile der Chul’adyr Formation enthalten sieben Arten von Nagetieren, die sechs (Sub-)Familien angehoeren. Der am haeufigsten 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 Einzelzaehne nachgewiesen (insgesamt 8% der gesamten Nagetier-Fauna). Die Zusammensetzung der Nagetier-Fauna stimmt mit den Faunen des Oligo-Miozaens Anatoliens zwar gut ;berein, naehere Verwandte eines Grossteils der Arten finden sich jedoch in Zentralasien.

Aufgrund der Evolutionsniveaus der Taxa Karydomys dzerzhinskii, Sayimys aff.obliquidens und tachyoryctoidine laesst sich die Fauna biostratigraphisch am ehesten ins Untermiozaen (eher MN4 als MN3) einstufen.


Elena G. Kordikova, 2024
http://proza.ru/2024/09/18/998
https://doi.org/10.13140/RG.2.2.26891.30241/1

New outlook on taxonomy and classification of the endemic fauna of mammals from the Early Miocene of the Aktau Mountains, Dzhungarian Alatau
(South-Eastern Kazakhstan, Central Asia)

Abstract. New outlook on taxonomy and classification of the endemic fauna of mammals from the Early Miocene of the Aktau Mountains, Dzhungarian Alatau (South-Eastern Kazakhstan, Central Asia) based on Kordikova et al.’ investigations is given. As a result of it new taxa (species, subgenus, genera, tribe, subfamily) were produced. These are: erinaceids Aktaugalerix iliensis n. gen. KORDIKOVA 2000/2024 and Aktaugalerix major n. gen. et n. sp. KORDIKOVA 2024, plesiosoricids Plesiosorex aydarlensis n. sp. KORDIKOVA 2000 and Parvosorex ziegleri n. gen. et n. sp. KORDIKOVA 2024, cricetids belonging to Aktaumyinae new subfamily KORDIKOVA 2024 with Aktaumys dzhungaricus type n. gen. et type n. sp. KORDIKOVA 2024, democricetodontines with Karydomys dzerzhinskii n. sp. KORDIKOVA et DEBRUIJN 2001, tachyoryctoidines with Kordikbruijnia kasachstanica n. gen. et n. sp. KORDIKOVA 2024, dipodid Aktausminthus wangi n. gen. et n. sp. KORDIKOVA 2024, ctenodactylid Sayimys kordikbruijni n. sp. KORDIKOVA 2024, and castorid Asiacastor tschuladyrensis n. sp. KORDIKOVA 2024, as well as amphicyonids (daphoenines) belonging to Aktaucyonini new tribe KORDIKOVA et al. 2000 with
Aktaucyon brachifacialis n. gen. et n. sp. KORDIKOVA et al. 2000, ursids (hemicyonines) belonging to Cinctocyon new subgenus KORDIKOVA et al. 2000 of Phoberocyon GINSBURO 1955 with Phoberocyon (Cinctocyon new subgenus) akhmetievi n. sp. KORDIKOVA et al. 2000, and mustelid Vonmustela kordikheizmanni n. gen. et n. sp. KORDIKOVA 2024.

Extract:
B. SYSTEMATIC PALEONTOLOGY:
II. Order Rodentia BOWDICH 1821
Family Cricetidae ROCHEBRUNE 1883
Aktaumyinae new subfamily KORDIKOVA 2024 [=Subfamily insertae sedis in KORDIKOVA et DEBRUIJN 2001]
Aktaumys type n. gen. KORDIKOVA 2024 [=Subfamily insertae sedis in KORDIKOVA et DEBRUIJN 2001]
Aktaumys dzhungaricus type n. gen. et type n. sp. KORDIKOVA 2024 [=Subfamily insertae sedis in KORDIKOVA et DEBRUIJN 2001]

Democricetodontinae LINDSAY 1987
Karydomys THEOCHAROPOULOS 2000
Karydomys dzerzhinskii n. sp. KORDIKOVA et DEBRUIJN 2001

Tachyoryctoidinae SCHAUB 1957
Kordikbruijnia n. gen. KORDIKOVA 2024 [=Genus A, species 1 in KORDIKOVA et DEBRUIJN 2001]
Kordikbruijnia kasachstanica n. gen. et n. sp. KORDIKOVA 2024 [=Genus A, species 1 n. sp. In KORDIKOVA et DEBRUIJN 2001]

Dipodidae WATERHOUSE 1842
Aktausminthus n. gen.  KORDIKOVA 2024 [=?Sinosminthus sp. Indet. in KORDIKOVA et DEBRUIJN 2001]
Aktausminthus wangi n. gen. et n. sp. KORDIKOVA 2024 [=?Sinosminthus sp. Indet. in KORDIKOVA et DEBRUIJN 2001]

Ctenodactylidae ZITTEL 1893
Sayimys WOOD 1937
Sayimys kordikbruijni n. sp. KORDIKOVA 2024 [=Sayimys aff. obliquidens (BOHLIN 1946) in KORDIKOVA et DEBRUIJN 2001]

Castoridae GILL 1872
Asiacastor LYCHEV 1971
Asiacastor tschuladyrensis n. sp. KORDIKOVA 2024 [=Asiacastor aff. baschanovi LYCHEV 1971, in KORDIKOVA et DEBRUIJN 2001]