13.2" Cluster Of Large, Black Shelled Calymene Trilobites - Morocco

This is a 13.2" wide cluster of large, black-shelled Flexicalymene triobites from Morocco. Most of the calymene trilobites you see from Morocco are preserved as internal molds and don't have any shell. These ones are in hard limestone, and have a thick, black shell. All the trilobites are laid out prone, five dorsal and one ventral with the largest being 3.55" long. One specimen has restoration along it's axis and on the center of it's head, and there is some minor restoration along repaired cracks on others.

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.
Tazarine, Morocco
Rock 13.2 x 9.6", Largest trilobite 3.55"
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