Psiloceratidae
| Psiloceratidae Temporal range: from Triassic to Cretaceous, 205.6– 66.043 Ma | |
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| Fossil shells of Psiloceras planorbis from Germany, on display at Galerie de paléontologie et d'anatomie comparée in Paris | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | Ammonoidea |
| Order: | Ammonitida |
| Family: | Psiloceratidae Hyatt 1867 |
| Synonyms | |
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Psiloceratidae is an extinct family of cephalopods belonging to the ammonite subclass.
Description
The Psiloceratidae are evolute, smooth or with blunt primary ribbing. The venter is rounded and generally smooth, in some feebly keeled. Sutures are simple with phylloid saddle endings in some. The aptychus is single, found in sutu in Psiloceras
Genera
- Discamphiceras
- Kammerkaroceras
- Paradiscamphiceras Taylor 1988
- Euphyllites Wahner 1898
- Badouxia Guex and Taylor 1976
- Caloceras
- Franziceras Buckman 1923
- Laqueoceras
- Murihikuites Stevens 2004
- Paraphylloceras Salfeld 1919
- Psiloceras
- Psilophyllites
Distribution
Fossils of species within this genus have been found in the Triassic rocks of Canada, in the Jurassic rocks of Argentina, Austria, Canada, China, France, Germany, Hungary, Mexico, New Zealand, Spain), United Kingdom, United States, as well as in the Cretaceous of Australia and Russia. [1]
References
- Arkell, W.J.; Kummel, B.; Wright, C.W. (1957). Mesozoic Ammonoidea. Treatise on Invertebrate Paleontology, Part L, Mollusca 4. Lawrence, Kansas: Geological Society of America and University of Kansas Press.
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