This Specimen has been sold.
3.25" Zlichovaspis Trilobite - Laatchana, Morocco
This is is a 3.25" long specimen of Zlichovaspis rugosa from Laatchana, Morocco. Visible eye facets in both eyes and both genal spines prepared free of the surrounding limestone. There preparation is a bit rough in areas leaving some scratches on the shell and there is some restoration to both genal spines, hence the bargain price.
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.