Description
Waptia fieldensis
Cambrian
Burgess Shale, Stephens Formation
Field, British Columbia, BC, Canada.
47mm if outstretched on 50mm slab.
Arthropod.
Waptia is an extinct genus of arthropod that is shrimp-like in form but it is different enough that it hasn’t been classified within any family of crustacean nor any family of arthropods for that matter – another unsolved mystery of the Burgess Shale over 100 years after its discovery. It does appear to be at least related to the ancestors of crustaceans.