Uncommon Species of Crotalocephalus (Not Gibbus) - 2.8"

Uncommon Species of Crotalocephalus (Not Gibbus) - #75572

Do not confuse this with the common trilobite Crotalocephalina gibbus frequently seen for sale. This is a different genus that comes from the area near Lghaft, Morocco. The pygidial (tail) spines are distinctly different. About 1% shell restoration along the repaired crack through the back half of the trilobite.

Trilobites were a very diverse group of extinct marine arthropods. They first appeared in the fossil record in the Early Cambrian (521 million years ago) and went extinct during the Permian mass extinction (250 million years ago). They were one of the most successful of the early animals on our planet: over 25,000 species have been described, filling nearly every evolutionary niche. Due in large part to their hard exoskeletons (shells), they left an excellent fossil record.

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