Maschenko E.N., Takai M. 2011. Primates of the genus Altanius (Mammalia, Primates) from the Lower Eocene of Tsagan-Khushu, southern Mongolia // Russian J. Theriol. Vol.9 (for 2010). No.2: 61–69 [in English].

Evgeny N. Maschenko [], Borissiak Paleontological Institute, Russian Academy of Sciences, Profsoyuznaia Str. 123, Moscow 117997, Russia;

Masanura Takai [], Primate Research Institute, Kyoto University, Inuyama 484-8506, Japan.

KEY WORDS: euprimates, dentition morphology, Lower Eocene, Mongolia.

ABSTRACT. Altanius is one of the oldest known euprimates discovered from the Early Eocene Naran-Bulak Formation, Tsagan-Khushu, southern Mongolia. In this paper, we describe three additional specimens of A. orlovi Dashzeveg et McKenna, 1977, and establish a new species, A. magnus sp. nov., in which m2 is distinctly larger than in A. orlovi. The discovery of a new species of Altanius provides further information on the evolutionary history of early primates on the Eurasian continent.

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