Naraoia compacta
Middle Cambrian
Burgess Shale
Stephens Formation
Field, British Columbia, BC Canada.

22mm on 60mm slab.

Naraoia is a genus of soft-bodied arthropods (Order Nektaspida) that had been classified as a trilobite by some paleontologists; something like a crustacean by others.  It is known from the Cambrian of North America and China.  The nektaspids survived to the Late Silurian.