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Fossils of crinoids, corals and more can be seen where flood waters washed away the top layers of the
Coralville Reservoir spillway.
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Devonian Fossil Gorge
Corals, crinoids, brachiopods and other Devonian-age (375 mya) fossils were exposed by floodwaters in 1993 and 2008.
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Iowa Public Television video.
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