Orthocones and Orthoceras

An orthocone is a type of extinct marine creature known as a cephalopod, which is a group of mollusks that includes squids, octopuses, and nautiluses.

Orthocones are characterized by their long, cone shaped shells, which were composed of calcium carbonate and often fossilise in some areas – with a large amount coming from Morocco, often cut and polished to make decorative objects.