Oecoptychius

Oecoptychius
Temporal range: Bajocian–Callovian[1]
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Ammonoidea
Genus: Oecoptychius

Oecoptychius is an extinct genus of fossil ammonite cephalopods. The species lived during the Middle Jurassic.[1]

Taxonomic position

Oecophtychius was named by Neumayr in 1878. It is placed into Oecoptychitidae, a family of dwarf ammonites established by Arkell, 1957, that is a part of the superfamily Stephanoceratoidea.

Diagnosis

Oecoptychius is an eccentrically coiled, dwarf ammonite. Inner whorls smooth, spheroidal; outer whorls with fine biplicate rbbing, ventral groove, and an acute elbow at half a whorl before the aperture; peristome contracted, with outwardly directed lappets.

Distribution

Fossils of the Oecophtychius species have been found in Jurassic sediments of France, Germany and Madagascar.[2]

References

  1. 1 2 Sepkoski, Jack (2002). "Sepkoski's Online Genus Database". Retrieved 2014-05-28.
  2. ↑ "Fossilworks.org - Oecoptychius". Retrieved 2014-05-28.
  • W.J. Arkell, et al., 1957. Mesozoic Ammonoidea; Treatise on Invertebrate Paleontology, Part L, Ammonoidea. Geological Society of America and University of Kansas Press.


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