| Gilbertsocrinus ohioensis Silica Shale Sylvania, Ohio Size: 5 cm across the piece. Tegmen is exposed on the back. Price: $100 US ID number: d1066 | 
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| Gilbertsocrinus ohioensis Silica Shale Sylvania, Ohio Size: 5 cm across the piece. Tegmen is exposed on the back. Price: $100 US ID number: d1066 |
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