Myocastor

Myocastor is a genus of rodent that contains the living nutria (or coypu), as well as several fossil species.

==Taxonomy== Due to similar cranial morphology, the nutria was once considered a close relative of the Caribbean hutias and placed together with them in the family Capromyidae. Later, it was more accepted to place it in its own family, the Myocastoridae. Recent molecular studies place them in the family Echimyidae, in the tribe Myocastorini.