Trilobites were a group of arthropods that lived 530 – 251 million years ago. There were many different species of trilobites (over 17,000!) and their hard, easily fossilized exoskeleton makes them a fairly common fossil. This cute and chubby little guy can be knit at any gauge - just make sure that it is firm enough so that the stuffing doesn’t show through. He would make a good pin cushion or cat toy if you put some catnip and maybe a bell in the stuffing.