| Eretomocrinus tentor Gilmore City Fm. Gilmore City, Iowa Size: The crinoid crown is about 1.8 cm plus the stem. Price: $20 US | 
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| Eretomocrinus tentor Gilmore City Fm. Gilmore City, Iowa Size: The crinoid crown is about 1.8 cm plus the stem. Price: $20 US |
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