Class Mammalia Linnaeus, 1758 - mammals Order †Eutriconodonta Kermack, Mussett & Rigney, 1973, incertae sedis Family †Gobiconodontidae Chow & Rich, 1984 Genus †Hangjinia Godefroit & Guo, 1999 [monotypic] 1 †Hangjinia chowi Godefroit & Guo, 1999