Orthoceras fossil shell pendant.
The ancient Orthoceras was a mollusk that is a modern day squid's ancestor. Orthoceras were around over 400 million years ago.
The name Orthoceras translates as straight horn. This makes sense because the Orthoceras had a straight, long cone-shaped shell. T
Pendant dimensions including bail: 1.6 inches long by 0.58 inches wide by 0.22 inches thick.