Two woolly rhinoceros fossils and two steppe bison fossils are seen on display at the Hulunbuir Historical Museum in Inner Mongolia. /CGTN

A woolly rhinoceros fossil is seen on display at the Hulunbuir Historical Museum in Inner Mongolia. /CGTN

A woolly rhinoceros fossil is seen on display at the Hulunbuir Historical Museum in Inner Mongolia. /CGTN

A steppe bison fossil is seen on display at the Hulunbuir Historical Museum in Inner Mongolia. /CGTN

The fossilized skull of a steppe bison is seen on display at the Hulunbuir Historical Museum in Inner Mongolia. /CGTN