PREHISTORIC TIMES
'(<a href="http://www.j-archive.com/media/2009-07-24_J_27.jpg" target="_blank">Kelly of the Clue Crew reports from the University of Wisconsin-Madison Geology Museum.</a>) The University of Wisconsin-Madison Geology Museum has a skeleton of this animal that humans may have driven extinct; the distinctive <a href="http://www.j-archive.com/media/2009-07-24_J_27a.jpg" target="_blank">teeth</a> that provided its name were once thought to belong to a carnivore'
a mastodon