Synonym: Marsupionta Gregory 1947 [invalid subgroup]
Full reference: C. Linnaeus. 1758. Systema Naturae per Regna Tria Naturae, secundum Classes, Ordines, Genera, Species, cum Characteribus, Differentiis, Synonymis, Locis. Tomus I. Laurentii Salvii, Holmiae (Stockholm) 1-823
Parent taxon: Mammaliaformes according to T. Rowe et al. 2008
Sister taxa: Adelobasileus, Amphilestheria, Bocaconodon, Sinoconodon
Subtaxa: Allotheria, Ameghinichnidae, Amphidontidae, Atlasodon, Bellua, Bondesiidae, Cimolomidae, Diplocynodontidae, Dipriodontidae, Ditremata, Docodonta, Eotheria, Erecta, Eutriconodonta, Ferugliotheriidae, Fruitafossor, Gobiconodontidae, Gobiotheriodon, Hakusanodon, Helioseus, Holotheria, Hypotheria, Hypsiprymnopsis, Ilerdoryctes, Jeholodentidae, Juchilestes, Kuehneotheriidae, Likhoeletherium, Lophiodolodus, Lufengoconodon, Malutitetrasauropodiscus, Microderson, Molapopentapodiscus, Monotremata, Morganucodonta, Natantia, Ovovivipara, Pleurodon, Polyprotodonta, Prensiculantia, Promammalia, Prototheria, Sarcobora, Schadipes, Simioidea, Sororyctidae, Subungulata, Thereuodontidae, Theriamorpha, Tikitherium, Tricuspes, Vincelestes, Volaticotheria, Wanotherium, Yinotheria