This Specimen has been sold.
.83" Wide, Enrolled Eldredgeops Trilobite Fossil - New York
This is a .83" wide, enrolled Eldredgeops trilobite from the Windom Shale of NY. It has been prepared with air abrasives and is still partially embedded in the shale in which it was found. The base of the rock has been cut flat so that it stands up nicely without the need for a display stand. Nice eye facet preservation in this trilobite.
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.