Olcostephanus

Olcostephanus Temporal range: Valanginian-Early Cretaceous ~139.8–130.0  Ma PreꞒ Ꞓ O S D C P T J K Pg N
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
AstieriaPavlow, 1892 Holcostephanus (Astieria)Pavlow, 1892 LemurostephanusThieuloy, 1977 Olcostephanus (Astieria)Pavlow, 1892 RogersitesSpath, 1924 SatoitesCanta-Chapa, 1966

Olcostephanus is an extinct ammonoid cephalopod genus belonging to the family Olcostephanidae. These fast-moving nektonic carnivores ^[1] lived during the Cretaceous, from the upper Valanginian to the lower Hauterivian age. ^{[2] [1] [3]}

Species

Source: ^[1]

• Olcostephanus astierianus(d'Orbigny, 1840)
• Olcostephanus atherstoniSharpe, 1856
• Olcostephanus bakeriImlay, 1937
• Olcostephanus boseiRiedel, 1938
• Olcostephanus delicatecostatusHaas, 1960
• Olcostephanus detoniiRodighiero 1919
• Olcostephanus filiferImlay, 1937
• Olcostephanus laticostaGerth, 1925
• Olcostephanus paucicostatusImlay, 1937
• Olcostephanus peckiImlay, 1960
• Olcostephanus popenoeiImlay, 1960
• Olcostephanus prorsiradiatusImlay, 1937
• Olcostephanus quadriradiatusImlay, 1938
• Olcostephanus sanlazarensisImlay, 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), ^[4] 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. ^[1]

References

1. The Paleobiology Database
2. Sepkoski, Jack Sepkoski's Online Genus Database – Cephalopoda
3. Wright C. W. with J.H. Callomon and M.K. Howarth (1996), Mollusca 4 Revised, Cretaceous Ammonoidea, vol. 4, in Treatise on Invertebrate Paleontology , Part L (Roger L. Kaesler et al. eds.), Boulder, Colorado: The Geological Society of America & Lawrence, Kansas: University of Kansas Press, p.46.
4. Piraquive et al., 2011, p.204

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.