Epipubic bones are a pair of bones projecting forward from the pelvic bones of modern marsupials and most non-placental fossil mammals: multituberculates, monotremes, and even basal eutherians.

What group of mammals have epipubic bones?

Epipubic bones first appear in the Tritylodontidae (a cynodont outgroup to the Mammalia) and are retained as a primitive character in all extinct noneu- therian mammals (for which postcranial ma- terial is available) and all living monotremes and marsupials (1, 3).

Do mammals have an Epipubic bone?

Epipubic bones occur in monotremes, marsupials, Mesozoic mammals (multituberculates, a symmetrodont (Y. Hu, Y.