''Dufrenoyia'' is an extinct genus of
Cretaceous ammonites included in the family
Parahoplitidae
Parahoplitidae is an extinct family of Cretaceous Ammonitida, ammonites with stoutly ribbed, compressed, generally involute shells lacking or with only minor tubercles included in the Deshayestoidea, a superfamily now separated from the Hoplitaca ...
. These fast-moving nektonic carnivores lived in the
Cretaceous period (
Aptian
The Aptian is an age in the geologic timescale or a stage in the stratigraphic column. It is a subdivision of the Early or Lower Cretaceous Epoch or Series and encompasses the time from 121.4 ± 1.0 Ma to 113.0 ± 1.0 Ma (million years ago), a ...
age).
[Sepkoski, Jac]
Sepkoski's Online Genus Database – Cephalopoda
/ref> 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.
Ammonitida genera
Ancyloceratina
Cretaceous ammonites
Early Cretaceous ammonites of North America
{{ammonitida-stub