This Specimen has been sold.
Three Phacops Araw Trilobites - Mrakib, Morocco
This is a really cool association of three well prepared Phacops araw trilobites quarried near Mrakib, Morocco. Phacops araw is one of the more uncommon phacopid species from Morocco and has a distinctively shaped glabella. The largest trilobite would be about 2" long if outstretched. The piece has been wonderfully prepared and the base of the rock cut flat so that it stands up nicely without the need for a display stand.
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.