Class Mammalia Linnaeus, 1758 - mammals Order †Morganucodonta Kermack, Mussett & Rigney, 1973, incertae sedis Family †Megazostrodontidae Gow, 1986 Genus †Brachyzostrodon Sigogneau-Russell, 1983 †Brachyzostrodon maior Hahn et al., 1991