ARTIODACTYLS FROM THE LATE PLIOCENE OF UDUNGA, WESTERN TRANS-BAIKAL, RUSSIA

Seven species of artiodactyls from the Udunga locality in the Selenga basin, Trans-Baikal, Russia, are described: Capreolus constantini, sp. nov., Axis shansius, Orchonoceros gromovi, Alcinae gen. indet., Gazel la sinensis, Antilospira zdanskyi, and Ovis sp. Capreolus constantini, the oldest known roe deer, is a possible descendant of Procapreolus w enzensis, which existed at the end of the early Pliocene (zone MN 15). The Udunga fauna is correlated with lower Villafranchian faunas (zone MN 16). The fauna existed on the southern border of the boreal forest at the boundary between the European-Siberian and Central Asian paleo zoogeographic sub-areas after 3.5 million years ago.