Cave paintings reveal clues to mystery Ice Age beast


Cave art from the Ice Age has helped solve the mysterious origins of Europe's largest land mammal.

The modern European bison, now found only in protected reserves, once roamed widely on the continent.

Studies of ancient DNA show the bison arose from interbreeding between the extinct steppe bison and the aurochs, about 120,000 years ago.

http://www.bbc.com/news/science-environment-37649597