Giant American Ground Sloth: Awesome Extinct Animals, Pt 1

The word "Pleistocene" always reminds me of that malleable sculpture substance that is really good at getting stuck under fingernails.  That stuff, however, is plasticine and is not the topic of the 5-part series of posts that is coming your way. Pleistocene refers to the geological epoch from about 2.5 million years ago (mya) to …