Cimolodontidae
Cimolodontidae is a family of fossil mammals within the extinct order Multituberculata. Representatives are known from the Upper Cretaceous and Paleocene of North America. The family Cimolodontidae was named by Othniel [Charles Marsh] in 1889 and is part of the suborder Cimolodonta within the superfamily Ptilodontoidea.