This Specimen has been sold.
1.5" Spiny Leonaspis Trilobite - Foum Zguid, Morocco
Here is a 1.5" long (including spines), spiny Leonaspis trilobite from Foum Zguid, Morocco. The dramatic spines are well preserved, you can see the small stalk eyes poking up above its head. Nice shell detail and preparation. There is about 2% restoration in total along a repaired crack.
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.