Period of life:
Nemegtbaatar is an ancient Cretaceous period mammal inhabited Mongolia territory. First fossils were found in the Nemegt Basin, in the Gobi Desert northwest. Therefore, the rodent got its name. It was a Multituberculata order species, a rodent-like creatures, inhabited North Africa and Asia arid regions approximately 166 million years ago.
Nemegtbaatar appearance was similar to steppe gerbil. Compared to species of its kind Nemegtbaatar had rather large body. The skull length reached up to 4.5 centimetres. Its feed mostly consisted of plants and fruits and sometimes it switched to worms and insects as well. The peculiar shape of the last lower premolar is the most distinctive feature of Multituberculata order. This tooth was larger and longer than the other cheek-teeth. It was used for crushing seeds and nuts.
The ancient rodent is included into the group of extinct multituberculates. Due to pelvic size, the animal was viviparous and did not lay eggs. Females delivered weak offspring in the deep burrows. Those burrows served as a daytime shelter for the whole “family”.