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New Material on Small Hyenodons (Hyaenodontinae, Creodonta) from the Paleogene of Mongolia

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Abstract

A new species of Hyaenodontinae is described from a horizontal ramus of the mandible, the smallest Asian species of the subfamily, Hyaenodon pumilus sp. nov. from the upper Eocene of the Ergilin Dzo Formation of southwestern Mongolia. New specimens of H. chunkhtensis Dashzeveg, 1985 are described from the localities Khoer Dzan (Ergilin Dzo Formation, upper Eocene) and Tatal Gol (Shand Gol Formation, upper Oligocene). The specimens of H. chunkhtensis can be divided into two morphotypes.

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ACKNOWLEDGMENTS

The author would like to thank A.K. Agadjanian (PIN) for reading the manuscript and suggesting improvements; R.J. Emry (USNM, Paleobiology Department, USA) for his invaluable assistance; D. Nagel (Paleontological Institute, University of Vienna, Austria) for providing specimen casts; M.N. Kandinov and I.A. Starodubtseva (collections department, Vernadsky Geological Museum, GGM) for providing material from the collections and for consultation.

Funding

This work was supported by the Russian Foundation of Basic Research (project nos. 08-04-00483, 09-04-01303, 11-04-00933A, 11–06–12030-OFI-M-2011, and OFI 13-06-5-OFI-M-2013) and by the program I.21P “Biodiversity of Natural Systems,” the program of basic research of the Department of Biological Sciences of the Russian Academy of Sciences “Biological Resources of Russia: Assessment and fundamental principles for monitoring.”

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  1. Borissiak Paleontological Institute, Russian Academy of Sciences, 117647, Moscow, Russia

    A. V. Lavrov

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Correspondence to A. V. Lavrov.

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Translated by D. Ponomarenko

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Lavrov, A.V. New Material on Small Hyenodons (Hyaenodontinae, Creodonta) from the Paleogene of Mongolia. Paleontol. J. 53, 418–431 (2019). https://doi.org/10.1134/S0031030119040063

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