Class Mammalia Linnaeus, 1758 - mammals Order †Eutriconodonta Kermack, Mussett & Rigney, 1973, incertae sedis Family †Triconodontidae Marsh, 1887 Subfamily †Alticonodontinae Fox, 1976 Genus †Alticonodonᵀ Fox, 1969 [monotypic] 1 †Alticonodon lindoei Fox, 1969