Oecoptychius
| Oecoptychius | |
|---|---|
| Scientific classification | |
| Kingdom: | |
| Phylum: | Mollusca
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| Class: | Cephalopoda
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| Subclass: | |
| Order: | |
| Superfamily: | |
| Family: | |
| 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[who?] in 1878. It is placed into , 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.[2]
References[]
- ^ Jump up to: a b Sepkoski, Jack (2002). "Sepkoski's Online Genus Database". Archived from the original on 2016-02-25. Retrieved 2014-05-28.
- ^ "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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- Ammonitida genera
- Haploceratoidea
- Jurassic ammonites
- Prehistoric animals of Madagascar
- Ammonitina stubs