Class Mammalia Linnaeus, 1758 - mammals Order †Morganucodonta Kermack, Mussett & Rigney, 1973, incertae sedis Family †Megazostrodontidae Gow, 1986 Genus †Dinnetherium Jenkins, Crompton & Downs, 1983 [monotypic] 1 †Dinnetherium nezorum Jenkins et al., 1983