This Specimen has been sold.
Lot: Fossil Calymene Trilobite Nodules - 33 Pieces
This is a clearance lot of 33 fossil Calymene trilobites in nodules from Morocco. Each nodule contains the positive and negative of the fossil. The trilobites range from 1 to 2.7" long with most in the size range. Many of the trilobites have repaired/glued cracks.
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 with over 25k currently described species, filling nearly every evolutionary niche. Due in large part to a hard exoskeleton (shell), they left an excellent fossil record.