A Monograph of the Trilobites of North America: with Coloured Models of the Species — Calymene Platys.[16] Green. Casts No. 4 and 5.

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A Monograph of the Trilobites of North America: with Coloured Models of the Species Calymene Platys.[16] Green. Casts No. 4 and 5. · ch 19/57

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