Anomalocaris was the first large predator of the Cambrian. It had powerful claws that can brake the shell of any Arthropod or Mollusk of the time. Its greatest weapon that made it the top Predator of the time is its eyes. It can see 360 degrees. Its only competition was another Anomalocaris. For that reason they avoid competition and when fighting there battles where like armor on armor. The winner would leave the enemy with broken armor or dead to be scavenged by other bottom creatures.