Scientific name: Rhizomyinae With fluorescence test，The fossil retains half of its skull and teeth, and is very exquisite. Belonging to the subfamily Rhizomyinae of the family Muridae in the order Rodentia, this is a group of rodents that live underground and primarily feed on bamboo roots. Discovery location: Yunnan, China Period: Pliocene to Pleistocene (approximately 5 million to 10,000 years ago)