Tribosphenida
Tribosphenida is a group (infralegion) of mammals that includes the ancestor of Hypomylos, Aegialodontia and Theria (the last common ancestor of marsupials and placentals plus all of its descendants). It belongs to the group Zatheria. Current definition of Tribosphenida is more or less synonymous with Boreosphenida.
| Tribosphenidans Temporal range: Late Jurassic to Holocene, | |
|---|---|
| Eomaia fossil | |
| Kangaroo with her joey | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Clade: | Zatheria |
| Clade: | Tribosphenida McKenna, 1975 |
| Clades | |
| |
| Synonyms | |
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Boreosphenida Luo et al., 2001 | |
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