Trachyceras

Trachyceras is a genus belonging to the extinct subclass of cephalopods known as ammonites. Specifically it belongs in the order Ceratitida. They are distributed in Afghanistan, Bosnia and Herzegovina, Canada, China, Germany, Hungary, India, Indonesia, Italy, the Russian Federation, Slovenia, United States.

The family to which Trachyceras belongs, the Trachyceratidae, has more or less involute, highly ornamented shells and ceratitic to ammonitic sutures.