In comparison, some small trucks can weigh ... There were two genera of the giant short-faced bear: Arctodus, which occupied North America, and Arctotherium, which lived in Central and South ...

following the giant ice shelf that covered the northern Atlantic during the ice age 20,000 years ago. In prehistoric North America, the short-faced bear (Arctodus simus) ruled the land.

This is a drawing of the extinct Australian giant short-faced kangaroo Simosthenurus occidentalis, part of the Sthenurinae sub-family. mtDNA from the petrous bones of Simosthenurus occidentalis ...