Corcorania trispinosa

Corcorania trispinosa is an enigmatic, 1.4 inch long arthropod of arcane lineage from the Lower Ordovician of Australia, and, may have relatives in similar-aged strata from Nevada and Utah (Utahcaris?). Some people think it may be related to some of the Chengjiang or Burgess Shales arthropod yahoos, other people insist on shoehorning it into Nektaspida (Naraoia and friends) for no obvious reason.