Description

Polypleuraspis insignis
Burgess Shale
Middle Cambrian
Burgess Shale, Stephens Formation
Field, British Columbia, Canada

26mm trilobite on 56mm slab.

Polypleuraspis is a trilobite officially described on the basis of an isolated pygidium from the Middle Cambrian of Greenland.  It’s also been found in the Spence Shale of Utah but serious collectors really want one from the Burgess.