The Iowa River's treacherous flooding from one year ago caused water to cross over the Coralville Dam's spillway for only the second time in its history. (The first time was during the floods of 1993.) Before that first flooding, this hillside was like any other in the area- tree covered ravines with plenty of deer and poison ivy. In just a few days, that first flood exposed a swath of Devonian-era limestone that seemingly should have taken decades to accomplish. Scientists were fascinated to see the array of sea life (crinoids, coral, shells and fish) from several epochs, all in fossil form.looking towards the dam
George Stanley photographing crinoids. These are just the stems of a long "sea flower" with a wide base, like a kelp bed, only these are from the animal kingdom.
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