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Additional tsaganomyid, cylindrodontid and?ctenodactyloid rodent materials from the Erden Obo?section, Erlian Basin (Nei Mongol, China)

Abstracts

To improve the Paleogene biochronological framework of the Erlian Basin, Nei Mongol?and clarify the diversity of fossil rodents in this region, new tsaganomyids (Cyclomylus lohensis,Coelodontomys asiaticus) from the “Upper White” beds, cylindrodontids (Gobiocylindrodon sp.,Proardynomys sp., and Cylindrodontidae gen. et sp. indet.) from the “Middle Red” and “Lower?Red” beds, and ctenodactyloids (Yuomys sp.) from the “Lower White” beds of the Erden Obo?section are reported. The appearance of C. lohensis and Co. asiaticus from the Erden Obo section?confirms that the age of the “Upper White” beds is Early Oligocene. The “Upper White” beds?of the Erden Obo section and the top bed of the Nom Khong Obo are confirmed to belong to the?same formation by both lithofacies and mammalian fossils. The different kinds of cylindrodontids?found from the different horizons of the Erden Obo section show that the cylindrodontids had a?high diversity and a relative continuous evolution in Eocene Asia.
Download Comment From cooperative journals:《古脊椎动物学报》 Hits:2454 Downloads:178
Recommended references: LI Qian.(2020).Additional tsaganomyid, cylindrodontid and?ctenodactyloid rodent materials from the Erden Obo?section, Erlian Basin (Nei Mongol, China).古脊椎动物学报.[ChinaXiv:202008.00034] (Click&Copy)
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[V1] 2020-08-02 22:46:00 chinaXiv:202008.00034V1 Download
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