Mammaliaformes Rowe 1988 Count: [*†*] 1o;1g;47s; †3f;12g;117s [crown] Mammalia Linnaeus 1758 [Rowe 1988], nom. cl. inval. see Class Mammalia Linnaeus, 1758 Count: [*†*] 1o;1g;47s; †3f;12g;113s 1 Prototheria Gill 1872 [O'Leary, Allard, Novacek, Meng & Gatesy 2004] see Subclass Prototheria Gill, 1872 Count: [*†*] 2s; †3s 2 Theriimorpha Rowe 1993 Count: [*†*] 1o;1g;45s; †3f;12g;110s