This Specimen has been sold.
1.8" Rare Crotalocephalus Trilobite - Jorf, Morocco
This is an excellent, Crotalocephalus (not to be confused with Crotacephalina) from Jorf, Morocco. It seems to have some affinities to Crotalocephalus africanus and maybe the same species, but I've only seen a handful of specimens from Jorf. Fantastic preparation on this piece.
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.