Both the orthoceris and ammonite had a head and front body portion that would have looked very similar to a modern-day squid, with grasping "arms" and tentacles. Modern cephalopods are the squid, octopus, cuttlefish and nautiloid. Only the Nautilus today has a shell.

F1735b - Orthoceris, Large, Polished, Morocco.

Length - about 12" long and weighs 3.5 pounds.
A large display specimen of an extinct cephalopod. The Orthoceris existed from the Lower ordovician Through Upper Triassic. 350 million to 190 million years ago. The orthoceris was a very close "cousin" to the ammonite in that they were both cephalopods and existed during the same time periods and both had an outer shell. The ammonite had a curved or rounded shell and the orthoceris had a straight shell.

Good price!