This Specimen has been sold.
Double Bumpy Cyphaspis Trilobite Specimen - Ofaten, Morocco
This is an nicely prepared, double Cyphaspis trilobite association from Ofaten, Morocco. Both specimens have very nice shell detail and preparation with the distinctive glabella covered in small bumps/spines. Each specimen is just over 1 1/2" long including the spines.
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.