Meniscoessus

Meniscoessus is a genus of extinct multituberculates from the Upper Cretaceous Period that lived in North America.

It is a member of the order Multituberculata, belonging to the suborder Cimolodonta and family Cimolomyidae. The multituberculates were primitive, rodent-like mammals occupying the modern rodent ecological niche. They were significant for having diverged early in mammalian evolution, co-existing with dinosaurs for ~100 million years, surviving through the Cretaceous–Paleogene extinction event and lasting until the end of the Paleogene, likely having been replaced by true rodents.