A Monograph of the Trilobites of North America: with Coloured Models of the Species — Calymene Macrophthalma.[20] Brongniart. Cast No. 9.

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A Monograph of the Trilobites of North America: with Coloured Models of the Species Calymene Macrophthalma.[20] Brongniart. Cast No. 9. · ch 23/57

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