This Specimen has been sold.
2.5" Detailed Hollardops Trilobite - Ofaten, Morocco
This is a detailed, 2.5" long Hollardops mesocristata trilobite fossil quarried near Ofaten, Morocco. This specimen is quite nice and much of the limestone has been removed from around it's tail leaving the pygidial spines free-standing. Nice eye facet preservation in both eyes. There is about 1-2% shell restoration along a repaired crack running through it's head.
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.