This Specimen has been sold.
Spine-On-Spine Koneprusia Trilobite - Very Special Prep!
This is a very special piece with incredible preparation. It features and exquisitely prepared Koneprusia trilobite next to a small enrolled reedops. Despite it's small size the Koneprusia even has preserved spines on it's spines, a testament to the quality of the work which would have taken many dozens of hours.
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.