Orthrozanclus

Orthrozanclus (from Greek + ( + ), "dawn scythe") is a genus of sea creatures known from two species, O. reburrus from the Middle Cambrian (~) Burgess Shale and O. elongata from Early Cambrian (~) Maotianshan Shales. Animals in this genus were one to two centimeters long, with spikes protruding from their armored bodies. The placement of this genus into a specific family is not universally accepted.