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Teenager finds prehistoric jaw bone of mastodon on Iowa farm: report

Teenager finds prehistoric jaw bone of mastodon on Iowa farm: report

close Video Mammoth Mastodon unearthed in Michigan University of Michigan-led dig unearths the most complete Mastodon since the 1940s A teenager got a big surprise while looking for arrowheads on an Iowa farm. Instead of any arrowheads, the teen found a 30-inch jaw bone of a mastodon -- a prehistoric hairy elephant, related to the mammoth. Mastodons