Clade Mammalia Linnaeus 1758 [Rowe 1988], nom. cl. inval. see Class Mammalia Linnaeus, 1758 Clade Trechnotheria McKenna 1975 Clade †Zhangheotheria Averianov, Martin & Lopatin 2013 Genus †Kiyatherium Maschenko, Lopatin & Voronkevich, 2002 1 †Kiyatherium cardiodens Maschenko, Lopatin & Voronkevich, 2002