Abstract
This report analyzes a find of fossils of Pliocene three-toed horse (Hipparion tchicoicum) in western Transbaikalia. The age of the mammalian fauna from red–brown clay in the Udunga locality indicates that Chikoi hipparion lived in the south of Eastern Siberia as early as the second half of the Early Pliocene; its remains in this area were known only from the red beds of the Upper Pliocene. This find made it possible to fill the existing hiatus (Early Pliocene) in its stratigraphic distribution: Late Miocene–Late Pliocene. The range of this three-toed horse species did not go beyond the borders of northern China, northern Mongolia, and the south of Eastern Siberia, which suggests its evolution within Inner Asia.
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Translated by D. Zabolotny
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Kalmykov, N.P. A Find of Early Pliocene Fossils of Three-toed Horse (Hipparion tchicoicum Ivanjev, 1966) in Western Transbaikalia. Dokl Biol Sci 497, 76–78 (2021). https://doi.org/10.1134/S001249662101004X
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DOI: https://doi.org/10.1134/S001249662101004X