Oecoptychius
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Oecoptychius
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Oecoptychius is an extinct genus of fossil ammonite cephalopods. The species lived during the Middle Jurassic.[1]
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 rbbing, 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.[2]
References
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<references />, or <references group="..." />- 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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