What is Theria?
{{Automatic Taxobox | name = Theria | fossil_range = [[Lower Cretaceous]] – Recent | image = Theria.jpg | image_caption = | taxon = Theria | authority = [[Thomas Jeffery Parker|Parker]] & [[William A. Haswell|Haswell]], 1897 | display_parents = 6 | subdivision_ranks = Infraclasses | subdivision = [[Metatheria]] <br/> [[Eutheria]] }} '''Theria''' is a [[Subclass (biology)|subclass]] of [[mammal]]s. It includes almost all living mammals: the ones that give birth to live young, and not by using a [[Eggshell|shelled]] [[Egg (biology)|egg]]. The Theria are divided into two groups ([[infraclass]]es): [[Metatheria]] and [[Eutheria]]. The surviving Metatheria are the [[marsupial]]s, and the Eutheria are the [[placenta]]l mammals. {{wikispecies|Theria}} {{-}} {{biology-stub}} [[Category:Mammals]]