| Calymene n. sp. Massie Shale Napoleon, Indiana Size: 6 cm. including the separation THE rarest trilobite from the Massie Shale. Most consider the Spathacalymene rare but the Calymene is even rarer. Price: $600 US ID number: f1356 | 
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| Calymene n. sp. Massie Shale Napoleon, Indiana Size: 6 cm. including the separation THE rarest trilobite from the Massie Shale. Most consider the Spathacalymene rare but the Calymene is even rarer. Price: $600 US ID number: f1356 |
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