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Temporal range: Late JurassicHolocene, 160–0 Ma
Scientific classification e
Kinrick: Animalia
Phylum: Chordata
Cless: Mammalia
Clade: Tribosphenida
Subcless: Theria

Theria (/ˈθɪəriə/; Greek: θηρίον, wild beast) is a subclass o mammals[1] that gie birth tae live young wioot uisin a shelled egg, consistin o the eutherians (includin the placental mammals) an the metatherians (includin the marsupials). The anly omittit extant mammal group is the egg-layin monotremes.

References[eedit | eedit soorce]

  1. Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. "Subclass Theria". Animal Diversity Web.CS1 maint: multiple names: authors leet (link)