Clade Mammalia Linnaeus 1758 [Rowe 1988], nom. cl. inval. see Clade Mammalia Linnaeus 1758 [Rowe 2020]
   1 †Phascolotherium bucklandi (Broderip, 1828)
   2.1 †Amphilestes broderipi orth. inval. see Amphilestes broderipii (Owen, 1845)
   2.2 Clade Trechnotheria McKenna 1975