| http://www.w3.org/ns/prov#value | - In the distant past, prehistoric Iowa was covered with shallow seas; coniferous forests flourished in areas beyond the continental glaciers; and a wide variety of animals existed, including mastodon, mammoth, musk ox, giant beaver, camel, and giant sloth.The presence of humans can be traced back to the Paleo-Indian interval, 9,500 to 7,500 years ago.
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