This Specimen has been sold.
2.3" Adrisiops Trilobite - New Phacopid Species
This is a 2.3" long specimens of Adrisiops weugi, a fairly rare species of phacopid from Morocco. It has a distinctive bulging glabella covered in large tubercles. This specimen is nicely prepared with nice eye facet preservation. About 3% shell restoration, mainly in a patch on the left-back side of the thorax.
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.