Calymene celebra Raymond 1916
Middle Silurian
Niagaran Limestone
Southern
Wisconsin, USA.

Calymene is one of the most recognizable trilobite genera and is noted for its strongly segmented exoskeleton, well developed compound eyes, and ability to enroll for protection. These animals lived on the seafloor where they likely fed on organic matter and small invertebrates.
40mm on 75mm slab