This Specimen has been sold.
1.8" Asaphus (New Species) Trilobite - Russia
This is a 1.8" long example of a new and currently undescribed species of Asaphus from the St Petersburg Region of Russia. It's head is tucked but it's a cute little guy. The base of the rock has been cut flat so that it displays nicely without the need for a display stand. Almost no shell restoration this specimen, just some fills in the repaired cracks.
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.