3.9" Spiny Delocare (Saharops) Trilobite - Bou Lachrhal, Morocco
This is a large, 3.9" long, spiny Delocare (Saharops) bensaidi trilobite quarried at Bou Lachrhal, Morocco. The preservation and preparation on this specimen is quite nice. Superb eye facet preservation in both eyes, and it is one of the larger examples of the species that I have seen.
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.