By Didier Descouens (Own work) [CC BY-SA 4.0 (], via Wikimedia Commons

Kingdom: Animalia

Phylum: Arthropoda

Class: Trilobita

Class: Phacopida

Family: Phacopidae

Genus: Phacops

This is a trilobite, arthropods that are extinct, that flourished in the sea from the Cambrian through the Permian. The name trilobite originates from the division of their bodies into three lobes: a central lobe and two pleural lobes on both sides. They were also divided into a head (cephalon), thorax, and a tail (pygidium). Trilobites could also roll up to protect themselves. Phacops, as you can see, has large eyes and a thorax of 12 segments.