This Specimen has been sold.
Rare, 1.75" Red Apatokephalus Trilobite - Fezouata Formation
This is an unusual, 1.75" long Apatokephalus trilobite from the upper Fezouata Formation collected north of Zagora, Morocco. This rare remopleurid trilobite has a long spine coming off the axial ring on one of it's last segments. The red/rust coloration is natural and due to the oxidization of iron pyrite.
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.