''Gaudryceras'' is an

ammonite Ammonoids are a group of extinct marine mollusc animals in the subclass Ammonoidea of the class Cephalopoda. These molluscs, commonly referred to as ammonites, are more closely related to living coleoids (i.e., octopuses, squid and cuttlefish) ...

genus belonging to the family Gaudryceratidae. These cephalopods were fast-moving nektonic carnivores. They lived in the Cretaceous period, from

Albian The Albian is both an age of the geologic timescale and a stage in the stratigraphic column. It is the youngest or uppermost subdivision of the Early/Lower Cretaceous Epoch/Series. Its approximate time range is 113.0 ± 1.0 Ma to 100.5 ± 0.9 M ...

Maastrichtian The Maastrichtian () is, in the ICS geologic timescale, the latest age (uppermost stage) of the Late Cretaceous Epoch or Upper Cretaceous Series, the Cretaceous Period or System, and of the Mesozoic Era or Erathem. It spanned the interval from ...

stages (105.3 to 66.043 Ma).Fossilworks
/ref>Sepkoski, Jac
Sepkoski's Online Genus Database – Cephalopodes
/ref>

Subgenera and species

Subg. ''Gaudryceras (Gaudryceras) '' de Grossouvre, 1894 :''Gaudryceras (Gaudryceras) alamedense'' (Smith, 1889) :''Gaudryceras (Gaudryceras) aureum'' (Anderson, 1958) :''Gaudryceras (Gaudryceras) cassisianum'' d'Orbigny, 1850 :''Gaudryceras (Gaudryceras) delvallense'' (Anderson, 1958) :''Gaudryceras (Gaudryceras) denmanense'' (Whiteaves, 1903) :''Gaudryceras (Gaudryceras) mitis'' Hauer, 1866 :''Gaudryceras (Gaudryceras) strictum'' Kennedy ''et al.'', 2007 :''Gaudryceras (Gaudryceras) texanum'' (Anderson, 1958) Subg. ''Gaudryceras (Mesogaudryceras)'' Spath, 1927 :''Gaudryceras (Mesogaudryceras) leptonema'' Sharpe, 1855 Subg. ''Gaudryceras (Neogaudryceras)'' Shimizu, 1935 :''Gaudryceras (Neogaudryceras) pictum'' Yabe, 1903 :''Gaudryceras (Neogaudryceras) beantalyense'' Collignon, 1956 :''Gaudryceras (Neogaudryceras) denseplicatum'' Jimbo, 1894 :''Gaudryceras (Neogaudryceras) kayei'' Forbes, 1846 :''Gaudryceras (Neogaudryceras) makarovense'' Shigeta and Maeda, 2005 :''Gaudryceras (Neogaudryceras) seymouriense'' Macellari, 1986 :''Gaudryceras (Neogaudryceras) stefaninii'' Venzo, 1936 :''Gaudryceras (Neogaudryceras) tenuiliratum'' Yabe, 1903 :''Gaudryceras (Neogaudryceras) varagurense'' Kossmat, 1895 :''Gaudryceras (Neogaudryceras) varagurense patagonicum'' (Paulcke, 1907) :''Gaudryceras (Neogaudryceras) varicostatum'' van Hoepen, 1921

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.

References

Ammonitida genera Cretaceous ammonites Ammonites of South America Cretaceous Brazil Cretaceous Mexico Cretaceous Chile Ammonites of Australia {{ammonite-stub