EulytocerasEulytoceras is an extinct genus of ammonoid cephalopods belonging to the family Lytoceratidae. These fast-moving nektonic carnivores lived in the Cretaceous period, from Hauterivian age to Barremian age.SpeciesEulytoceras anisoptychum Uhlig, 1883Eulytoceras inaequalicostatus d'Orbigny, 1840Eulytoceras phestum Matheron, 1878DescriptionShells of Eulytoceras species reach a diameter of about.DistributionFossils of species within this genus have been found in the Cretaceous rocks of Antarctica, Austria, Canada, Italy, Madagascar, South Africa and Spain.