Paleontologists have descibed a new species of the multituberculate mammal genus Cimolodon based on a fossil found in Baja California, Mexico. Paleontologists have descibed a new species of the multituberculate mammal genus Cimolodon based on a fossil found in Baja California, Mexico. The newly-described mammal species lived in what is now Mexico about 75 million years ago (Cretaceous perio... [2330 chars]