Gaudryceras

Gaudryceras is an ammonite genus belonging to the family Gaudryceratidae.
These cephalopods were fast-moving nektonic carnivores. They lived in the Cretaceous period, from Albian to Maastrichtian stages (105.3 to 66.043 Ma).
Subgenera and species.
Subg. "Gaudryceras (Gaudryceras) " 
Subg. "Gaudryceras (Mesogaudryceras)" 
Subg. "Gaudryceras (Neogaudryceras)" 
Distribution.
Fossils of species within this genus have been found in the Cretaceous sediments of Angola, Antarctica, Australia, Austria, Brazil, Chile, France, Germany, India, Japan, Madagascar, Mexico, New Zealand, Nigeria, Russia, South Africa, Spain and United States.