Zatheria
Encyclopedia
Zatheria is a group of mammals that is defined as including the ancestor of Arguitheriidae, Arguimuridae, Vincelestidae, Peramuridae
and Tribosphenida
(living Theria
ns plus all of its descendants).
Peramuridae
The family Peramuridae is a possible ancestor of early therians. The only certain representative lived in the Late Jurassic and Early Cretaceous.-References:*...
and Tribosphenida
Tribosphenida
Tribosphenida is a group of mammals that is defined as including the ancestor of Hypomylos, Necrolestidae, Aegialodontia and supercohort Theria .-External links:* * * -Further reading:...
(living Theria
Theria
Theria is a subclass of mammals that give birth to live young without using a shelled egg, including both eutherians and metatherians . The only omitted extant mammal group is the egg-laying monotremes....
ns plus all of its descendants).