This Specimen has been sold.
1" Wide Eldredgeops Trilobite Fossil - Hamburg, New York
This is a 1" wide, enrolled Eldredgeops trilobite from the Windom Shale of New York. It was cleaned with air abrasives and left partially embedded in the rock it was found in. Great eye facet preservation. This is quite large from the Eldredgeops from this site.
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.