Hollardops and Gerastos Trilobites - Ofaten, Morocco
This is a fantastic, natural association of a 1.6" Hollardops trilobite and a pair of Gerastos trilobites. All the trilobites on this piece are well preserved, inflated and expertly prepared. Just check out the clean eye facets in all of the trilobites. A really aesthetic 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.