Cimolestes is a mammal that lived during the Cretaceous. It was only eight inches long-about the size of a rat-which is typical of Mesozoic Mammals. Cimolestes is a mammal that has lived in Africa and North America Woodlands, Cimolestes means bug thief. Which is the preferred food for Cimolestes. Cimolestes would likely live in small holes high in Trees so they can hide from large dinosaurs. The notable members of the Cimolestes are Cindy and Thelma.