Parent taxon: Mammalia according to J. F. Bonaparte 1986
See also Jenkins and Crompton 1979, McKenna 1975 and Zhou et al. 1991
Sister taxa: Acrotheria, Allotheria, Ameghinichnidae, Ameghinichnus, Anagonia, Anagonia insulata, Anisorhizus, Anisorhizus atriarius, Apotheria, Aquila ferox, Archaeorycteropus patagonicus, Arrhinolemuroidea, Atlasodon, Australosphenida, Bellua, Bondesiidae, Bunotheria, Cimolomidae, Diplodon ampliatus, Diplodonops, Dipodiscidae, Dipriodontidae, Ditremata, Eopentapodiscidae, Eotetrapodiscus, Erecta, Erythrotherium, Eutriconodonta, Eutrochodon, Florentinoameghinia, Fruitafossor, Gobiotheriodon, Helioseus, Holotheria, Holotheria, Homunculus imago, Hypotheria, Isolophodon aplanatus, Likhoeletherium, Lophiodolodus, Lufengoconodon, Malutitetrapodiscus, Malutitetrasauropodiscus, Marsupialia, Marsupionta, Mesotheria, Microderson, Miotheria, Molapopentapodiscus, Necrolestidae, Ovovivipara, Pachydermata, Pachypithecus, Pachypithecus macrognathus, Pansirenia, Paraeopentapodiscidae, Phoca aegyptiaca, Phoca aegyptiaca antiqua, Picunia, Plagiocoelus, Pleurodon, Praephoca, Praephoca bendullensis, Prensiculantia, Promammalia, Proplanodus, Proplanodus adnepos, Prostylophorus, Prostylophorus margeriei, Protobradidae, Protobradys, Protobradys harmonicus, Prototheria, Ptolemaiida, Sarcobora, Schadipes, Sederipes, Simioidea, Solipedia, Sororyctidae, Stenogenium aenigmaticum, Stylodontidae, Subungulata, Sukotyro, Thereuodontidae, Theriamorpha, Tikitherium, Trichechus hydropithecus, Tricorynopus, Trilobodon, Uintatheriamorpha, Volaticotheria, Wanotherium, Yinotheria
Subtaxa: Triconodonta