Dufrenoyia is an extinct genus of Cretaceous ammonites included in the family Parahoplitidae. These fast-moving nektonic carnivores lived in the Cretaceous period (Aptian age).Sepkoski, Jack Sepkoski's Online Genus Database – Cephalopoda The type species of the genus is Ammonites dufrenoyi.
Species
Dufrenoyia codazziana Karsten, 1886 Dufrenoyia dufrenoyi d'Orbigny, 1840 Dufrenoyia furcata Sowerby, 1836 Dufrenoyia justinae Hill, 1893
Distribution Fossils of species within this genus have been found in the Cretaceous sediments of Germany, Mexico, Morocco, Spain, the United Kingdom, United States, Colombia and Venezuela.
References
Arkell et al., 1957. Mesozoic Ammonoidea. Treatise on Invertebrate Paleontology, Part L Ammonoidea. Geological Soc of America and University of Kansas press.