The deer's skull was discovered at Badlands ... On the other end of the size spectrum, three new extinct species of giant kangaroos were identified in Australia earlier this year.

Extinct Irish Elk, Megaloceros giganteus ... which lasted from roughly 13,000 to 12,000 years ago. The giant deer required abundant, mineral-rich grasses, leaves and shoots, and such vegetation ...

Experts from the Slovak Academy of Sciences now agree it’s a rarer find—likely from another prehistoric giant. Such discoveries ... and bones from a deer and a mammoth, as well as a tooth ...