This Specimen has been sold.
3.5" Spiny Saharops Trilobite - Oued Ghris, Morocco
This is a large, 3.5" long, spiny Saharops bensaidi trilobite quarried at Oued Ghris, Morocco. The preservation and preparation on this specimen is quite nice. It has much better shell detail than most of the trilobites from this locality and the eye facets are clear in both eyes. There has been some touchups of scratches and dings from preparation but no major restoration.
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 described species, filling nearly every evolutionary niche. Due in large part to a hard exoskeleton (shell), they left a excellent fossil record.