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At this time Iowa was home to mammoths and mastodons, whose remains were preserved in a wide variety of locations in the state. [2] During the glaciations of the Ice Age over the past 2.5 million years the glaciers transported and deposited fossils eroded from Cretaceous sediments.
This list of the Paleozoic life of Iowa contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Iowa and are between 538.8 and 252.17 million years of age.
Fossil of the Cambrian-Middle Devonian trilobite Cheirurus †Cheirurus †Chomatodus †Chomatodus inconstans †Chonetes †Chonetes glenparkensis †Chonetes illinoisensis †Chonetes logani †Chonetes multicosta †Chonetes ornatus †Cleiothyridina †Cleiothyridina incrassata – or unidentified comparable form †Cleiothyridina sublamellosa
The Devonian Fossil Gorge, northeast of Iowa City on the banks of the Iowa River, provides a glimpse into the ancient world. Exposed by the floods of 1993 and 2008, the gorge reveals a landscape ...
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In June, a fossil diver found a large section of tusk from a long-extinct mastodon off the Gulf Coast of Florida. Archaeologists at an Iowa creek bed where a 13,600 mastodon skull was found ...
This article contains a list of fossil-bearing stratigraphic units in the state of Iowa, U.S. Sites. Group or Formation Period ... Galena Group/Wise Lake Formation:
The seven sites on the Upper Iowa River are located in the same area that the early French explorers and fur traders found the Ioway Native American tribe. Archaeologists are in general agreement that the Orr Phase pottery represents the Prehistoric cultural remains of the Ioway tribe, as well as the closely related Otoe tribe. [1]