You're in for a real treat with this Orthoceras fossil. Orthoceras are cephalopods that existed in the Upper Devonian period (~370 million years ago). They lived inside their shells and used jet propulsion for transportation, squirting out fluid from their siphuncles, which also helped them adjust their buoyancy. Orthoceras became extinct around 200 million years ago, but they live on through their close relatives in the Nautilus Family: Octopus, Squish and Cuttlefish. It's immortalized here in fossil form to be enjoyed and remembered for generations to come!