This Specimen has been sold.
Bargain, 1.25" Long-Spined Thysanopeltis Trilobite - Bigaa, Morocco
This is a new type of Thysanopeltis that I've just seen appearing on the market in the past year collected from the area of Taouz, Morocco. It has much more robust spines than are seen in other species of Thysanopeltis. This specimen is 1.25" long and the head is very slightly seperated from the body. The preparation is a bit rough, hence the bargain price.
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.