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