skull of giant bison (bison latifrons) bison latifrons is an extinct species of bison that lived in north america during the pleistocene. also known as the giant bison, or ice age bison it reached a shoulder height of 2.5 meters (8.5 feet), and had horns that spanned over 2 meters (6.5 feet), more than three times the size of today's buffalo. this skull was found in idaho. royal tyrrel museum, alta, canada.