Arthropod – Aglaspidae – Beckwithia sp.
Upper Cambrian
Weeks Shale Formation
House Range, Millard County
Utah, USA
48mm arthropod on 66mm slab. Extremely rare.

Arthropod. Soft-bodied. Aglaspid.

Beckwithia is a genus arthropod that looks vaguely like a trilobite but is classified as an aglaspidid of the Class Artiopoda.

Aglaspidids appeared during the Cambrian, survived into the Early Ordovician but died out by the end of the period. Some scientists say they are related to the ancestors of horseshoe crabs and arachnids.