This Specimen has been sold.
4.1" Very Inflated Zlichovaspis Trilobite - Orange Eyes
This is a very inflated, 4.1" long Dalmanitid trilobite (Zlichovaspis rugosa) collected near Atchana, Morocco. It is good-sized for the species, has beautiful shell, laid out nicely, and the preparation is excellent. Of particular note is how inflated this specimen is as well as the orange eye preservation. I had this one in my personal collection until recently.
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.