Early cretaceous mammals of Western Siberia: 3. Zhangheotheriidae

New material of Kiyatherium cardiodens Maschenko, Lopatin et Voronkevich, 2002 from the Early Cretaceous Shestakovo 3 locality (Kemerovo Region, Western Siberia) suggest that this taxon belongs to symmetrodont mammals of the family Zhangheotheriidae. Kiyatherium has relatively long and narrow upper and lower molars, with large trigon and trigonid angles (triangularity is approximately as pronounced as in Tinodontidae); a wide and deep Meckel’s...