Orthoceras, also known as Orthoceratites, is a genus of extinct nautiloid cephalopod. Its name is derived from the words “straight horn”, referring to it’s long, conical shell. These creatures roamed the seas during the Ordovician Period (485 million - 443 million years ago). Fossils are a great tool to move you from the old to the new. These pendants are pre-drilled and ready for you to add a bail or your favourite cord.