Taxonomic status and paleoecology of Rusingoryx atopocranion (Mammalia, Artiodactyla), an extinct Pleistocene bovid from Rusinga Island, Kenya

a Hominid Paleobiology Doctoral Program, CASHP, Department of Anthropology, The George Washington University, 2110 G Street NW, Washington, DC 20052, USA b Department of Vertebrate Paleontology, American Museum of Natural History, Central Park West at 79th Street, New York, NY 10024, USA c Center for the Study of Human Origins, Department of Anthropology, New York University, 25 Waverly Place, New York, NY 10012, USA d Department of Geology, Baylor University, One Bear Place #97354, Waco, TX 76798, USA e Department of Geology and Geophysics, University of Minnesota, 210 Pillsbury Drive SE, Minneapolis, MN 55455, USA