This Specimen has been sold.
.9" Enrolled Calymene Celebra Trilobite - Ohio
This is a .9" wide, enrolled Calymene celebra trilobite from the Cedarville Dolomite deposit of Miami, Ohio. Calymene celebra is the state fossil Wisconsin in 1985.
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.