Olcostephanus

Olcostephanus Temporal range: Valanginian-Early Cretaceous ~
Fossil of Olcostephanus astierianus from France, on display at Galerie de paléontologie et d'anatomie comparée in Paris
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	†Ammonoidea
Order:	†Ammonitida
Family:	†Olcostephanidae
Genus:	†Olcostephanus Neumayr, 1875
Synonyms
Astieria Pavlow, 1892 Holcostephanus (Astieria) Pavlow, 1892 Lemurostephanus Thieuloy, 1977 Olcostephanus (Astieria) Pavlow, 1892 Rogersites Spath, 1924 Satoites Canta-Chapa, 1966

Olcostephanus is an extinct ammonoid cephalopod genus belonging to the family Olcostephanidae. These fast-moving nektonic carnivores lived during the Cretaceous, from the upper Valanginian to the lower Hauterivian age.

Species

• Olcostephanus astierianus (d'Orbigny, 1840)
• Olcostephanus atherstoni Sharpe, 1856
• Olcostephanus bakeri Imlay, 1937
• Olcostephanus bosei Riedel, 1938
• Olcostephanus delicatecostatus Haas, 1960
• Olcostephanus detonii Rodighiero 1919
• Olcostephanus filifer Imlay, 1937
• Olcostephanus laticosta Gerth, 1925
• Olcostephanus paucicostatus Imlay, 1937
• Olcostephanus pecki Imlay, 1960
• Olcostephanus popenoei Imlay, 1960
• Olcostephanus prorsiradiatus Imlay, 1937
• Olcostephanus quadriradiatus Imlay, 1938
• Olcostephanus sanlazarensis Imlay, 1937

Distribution

Fossils of species within this genus have been found in the Cretaceous sediments of Antarctica, Argentina, Austria, Bulgaria, Chile, Colombia (Macanal Formation, Eastern Ranges), Czech Republic, France, Hungary, Italy, Mexico, Morocco, Poland, Portugal, Romania, Slovakia, South Africa, Spain, Russia, United States, as well as in the Jurassic of Argentina.

References

Bibliography

• Piraquive, Alejandro; Díaz, Juan Sebastián; Cuéllar, Tomas; Pardo, Germán; Kammer, Andreas (2011), "Reactivación Neógena de estructuras de rift del Cretácico Temprano asociadas con la Falla de Chámeza, Pajarito, Boyacá (Colombia): evidencias tectónicas y bioestratigráficas" (PDF), Geología Colombiana, 36: 197–216, retrieved 2017-08-04
• Wright C.W. with J.H. Callomon and M.K. Howarth (1996). "Mollusca 4 Revised: Cretaceous Ammonoidea". In Roger L. Kaesler (ed.). Treatise on Invertebrate Paleontology Part L. Vol. 4. Boulder, Colorado and Lawrence, Kansas: The Geological Society of America & University of Kansas Press. p. 46 – via Internet Archive.