Ondatrini
Ondatrini is a genus of extinct rodents that lived during the Oligocene epoch. These animals are known from fossil remains found in North America. Ondatrini are considered to be early relatives of modern muskrats and voles, belonging to the subfamily Ondatrinae within the rodent family Cricetidae.
The fossil record suggests that Ondatrini were semi-aquatic or aquatic, similar to their modern descendants. Their
The evolutionary significance of Ondatrini lies in their position as ancestral forms to more derived arvicoline