Desmoceras

Desmoceras is a genus of ammonites belonging to the family Desmoceratidae. These cephalopods were fast-moving nektonic carnivores. They lived in the Early Cretaceous; Albian epoch.
Distribution.
Cretaceous of Angola, Antarctica, Australia, Canada, Colombia (Hiló Formation), Egypt, France, Germany, Italy, Japan, Madagascar (Mahajanga Province), Mexico, Morocco, Nigeria, Peru, Russia, United Kingdom, United States and Venezuela.