A fully preserved 39,500-year-old cave bear found in the Siberian permafrost.

The team identified it as a cave bear, a species of bear that’s now extinct. It’s last common ancestor with modern bears lived about 1.2 to 1.4 million years ago, according to a study published in the journal Current Biology in 2001, George Dvorsky reports for Gizmodo. Cave bears could weigh up to 1,540 pounds, which is larger than most polar bears. The cave bear carcass found on Bolshyoy Lyakhovsky probably lived between 22,000 and 39,500 years ago, and the researchers hope to narrow that window with further research.