Invalid subtaxa: Heptaconodon Zdansky 1930 [nomen dubium], Heptaconodon dubium Zdansky 1930 [nomen dubium], Prozalambdalestes Trofimov 1974 [nomen nudum], Quadripedes Gray 1821 [invalid subgroup]
Full reference: T. H. Huxley. 1880. On the application of the laws of evolution to the arrangement of the Vertebrata, and more particularly of the Mammalia. Proceedings of the Zoological Society, London 43:649-662
Parent taxon: Theria according to Z.-X. Luo et al. 2011
Sister taxa: Eupantotheria, Kuehneotheria, Metatheria, Pantotheria, Paratheria, Symmetrodonta, Tribotheria
Subtaxa: Acreodi, Acristatherium, Arctocyonidae, Asioryctitheria, Bibymalagasia, Cimolesta, Deltatherium, Digitigradae, Edentulae, Endotherium, Eomaia, Gliriformes, Holoclemensiidae, Horolodectes, Hydrophorae, Juramaia, Kennalestoidea, Leptictida, Mingotheriidae, Monochenae, Mutica, Nanocuridae, Notopterna, Oligodontae, Palaeoryctidae, Paleotomus, Pantolestidae, Paranyctoides, Paraxonia, Placentalia, Plantigradae, Rosores, Ruminantes, Sahnitherium, Sazlestes, Taeniodonta, Tesserachenae, Therictoidea, Trichenae, Zalambdalestidae, Zhelestidae