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Paradoxides was a genus of relatively large trilobites, extinct marine arthropods, that form the class Trilobita found throughout the world during the Mid Cambrian period (540 million years ago). It was a moderately large trilobite with a semicircular head, free cheeks each ending with a long, narrow, recurved spine, and relatively large eyes. Its elongated trunk was composed of 20 segments and again was adorned with longish, recurved lateral spines. Its pygidium(caudal shield) was comparatively small and had one or two pairs of long spines on the posterior margin.

Paradoxides Harlani

Paradoxides was a genus of relatively large trilobites, extinct marine arthropods, that form the class…