Mastodon skull found in Iowa estimated to be 13,600 years old
Discovered in the southern part of the state, it is Iowa’s first well-preserved mastodon. Watch: Ancient mastodon skull dug out of ground in Iowa Researchers at the University of Iowa have found a mastodon skull estimated to be over 13,000 years old. Archaeologists in Iowa believe they have unearthed an ancient mastodon skull dating back […]