This Specimen has been sold.
Large, 3.1" Hollardops Trilobite - Exceptional Specimen
This is an exceptionally large, and nice specimen of Hollardops mesocristata from Issoumour, Morocco. While it is a common trilobite, this is certainly in the top 1% . It's 3.1" long, and nicely prepared with clear, orangish colored eye facets.
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.