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)  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.