Theria
's information is
Birth and death years unknown
Theria ( or ; from Ancient Greek θηρίον (thēríon) 'wild beast') is a subclass of mammals amongst the Theriiformes. Theria contains the eutherians (which includes placental mammals) and the metatherians (which includes marsupials) but excludes the egg-laying monotremes and various extinct mammals evolving prior to the common ancestor of placentals and marsupials.
* Calculated from Wikipedia data.
Accuracy is not guaranteed.
| Theria Temporal range:
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Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Clade: | Theriimorpha |
| Clade: | Theriiformes |
| Clade: | Trechnotheria |
| Clade: | Cladotheria |
| Clade: | Prototribosphenida |
| Clade: | Zatheria |
| Clade: | Tribosphenida |
| Subclass: | Theria Parker & Haswell, 1897 |
| Subgroups | |
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