Theria

subclass of mammals

Theria is a subclass of mammals. It includes almost all living mammals: the ones that give birth to live young, and not by using a shelled egg.

Theria
Temporal range: Lower Cretaceous – Recent
Scientific classification Edit this classification
Domain:Eukaryota
Kingdom:Animalia
Phylum:Chordata
Class:Mammalia
Clade:Theriiformes
Clade:Trechnotheria
Clade:Cladotheria
Clade:Prototribosphenida
Clade:Zatheria
Clade:Tribosphenida
Subclass:Theria
Parker & Haswell, 1897
Infraclasses

Metatheria
Eutheria

The Theria are divided into two groups (infraclasses): Metatheria and Eutheria. The surviving Metatheria are the marsupials, and the Eutheria are the placental mammals.