Two Flexicalymene Trilobites With Ceraurus - Belleville, Ontario
This fossil trilobite & bryozoan plate comes from an old collection and was collected in Belleville, Ontario. It features two 1.7" long Flexicalymene senaria, a Ceraurus globulobatus and several bryozoan fossils. The entire piece measures 8 x 6.2" and comes with an acrylic display stand.
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.