Isoxys
Chengjiang
Early Cambrian Eoredlichia Zone
Yu’ anshan Mbr., Qiongzhusi Formation
Chengjiang, China

11mm arthropod on 68mm matrix.

Isoxys is a genus of arthropod in its own family (Isoxidae) that has yet to be assigned to an order.  It’s known from the Early to Middle Cambrian of Canada (Burgess Shale) as well as Australia and Russia.  It is thought to be related to the earliest arthropods.