Pagetia bootes
Trilobite
Middle Cambrian
Burgess Shale, Stephens Formation
Field, British Columbia, Canada

5mm trilobite on 72mm slab.

Pagetia is a trilobite genus in the Order Agnostida, known from the Middle Cambrian of western North America and southwestern China.  It should be noted that some paleontologists have questioned the assignment of the order within the trilobite class, and given their relatively simple form, it’s possible agnostids could be more closely related to a group ancestral to trilobites.

Most collector already own an agnostid or two, but when it’s from the Burgess Shale, you need that one too.