| Archaeocidaris aliquantula Cribanocrinus watersianus Aorocrinus iola Gilmore City Fm. Gilmore City, Iowa Size: 8.2 cm. across the plate There are specimens on BOTH sides of the plate. Price: $100 US ID number: f2771 | 
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| Archaeocidaris aliquantula Cribanocrinus watersianus Aorocrinus iola Gilmore City Fm. Gilmore City, Iowa Size: 8.2 cm. across the plate There are specimens on BOTH sides of the plate. Price: $100 US ID number: f2771 |
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