Oecoptychius

Oecoptychius Temporal range: Bajocian–Callovian PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	†Ammonoidea
Order:	†Ammonitida
Family:	†Strigoceratidae
Genus:	†Oecoptychius

Oecoptychius is an extinct genus of fossil ammonite cephalopods. The species lived during the Middle Jurassic.

Taxonomic position

Oecophtychius was named by Neumayr^[who?] in 1878. It is placed into Oecoptychitidae, a family of dwarf ammonites established by Arkell^[who?], 1957, that is a part of the superfamily Stephanoceratoidea.^{[citation needed]}

Diagnosis

Oecoptychius is an eccentrically coiled, dwarf ammonite. Inner whorls smooth, spheroidal; outer whorls with fine biplicate ribbing, ventral groove, and an acute elbow at half a whorl before the aperture; peristome contracted, with outwardly directed lappets.^{[citation needed]}

Distribution

Fossils of the Oecophtychius species have been found in Jurassic sediments of France, Germany and Madagascar.

References

• W.J. Arkell, et al., 1957. Mesozoic Ammonoidea; Treatise on Invertebrate Paleontology, Part L, Ammonoidea. Geological Society of America and University of Kansas Press.

This article includes a list of general references but lacks sufficient corresponding inline citations. Please help improve this article by introducing more precise citations. (March 2015) (Learn how and when to remove this message)

This Ammonitina-related article is a stub. You can help Wikipedia by adding missing information.

• v
• t
• e