Olcostephanus

Olcostephanus Temporal range: from Jurassic to Cretaceous, 161.2 –130.0 Ma PreЄ Є O S D C P T J K Pg N [1]
Fossil of Olcostephanus astierianus from France, on display at Galerie de paléontologie et d'anatomie comparée in Paris
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	Ammonoidea
Order:	Ammonitida
Suborder:	Ammonitina
Superfamily:	Perisphinctoidea
Family:	Olcostephanidae
Genus:	Olcostephanus Neumayr 1875
Synonyms
[1] 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 ^[1] lived during the Cretaceous, from the upper Valanginian to the lower Hauterivian age. ^[2]

Species

^[1]

• 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, Chile, Colombia, Czech Republic, Czechoslovakia, 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