| Gennaeocrinus variabilis Bell Shale Rockport, Michigan Size: The calyx is about 1.4 cm across the tegmen. This is large for this species. In comparison the others are less than a cm. Price: $25 US | 
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| Gennaeocrinus variabilis Bell Shale Rockport, Michigan Size: The calyx is about 1.4 cm across the tegmen. This is large for this species. In comparison the others are less than a cm. Price: $25 US |
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