Ptychites
| Ptychites Temporal range: Middle Triassic,
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| Fossil of Ptychites studeri from Bosnia, on display at Galerie de paléontologie et d'anatomie comparée in Paris | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | †Ammonoidea |
| Order: | †Ceratitida |
| Family: | †Ptychitidae |
| Genus: | †Ptychites Mojsisovics, 1875 |
Ptychites is an extinct genus of cephalopods belonging to the family Ptychitidae. These nektonic carnivores lived during the Triassic period, from Anisian to Ladinian age.[1]
Species
[edit]- Ptychites besnosovi Shevyrev 1995
- Ptychites densistriatus Bucher 1992
- Ptychites domatus Silberling and Tozer 1968
- Ptychites evansi Smith 1914
- Ptychites gradinarui Bucher 1992
- Ptychites guloensis Tozer 1994
- Ptychites hamatus Tozer 1994
- Ptychites miyagiensis Bando 1964
- Ptychites nipponicus Bando 1964
- Ptychites oppeli Mojsisovic 1882
- Ptychites opulentus Mojsisovics 1882
- Ptychites pseudoeuglyphus Konstantinov 1991
- Ptychites stachei Mojsisovics 1882
- Ptychites trochleaeformis Lindstroem 1865
- Ptychites wrighti McLearn 1946
Description
[edit]Species in this genus are quite variable in form, ranging from subglobose to laterally compressed. The surface of the shell is sculptured with low folds.[2]
Distribution
[edit]Fossils of species within this genus have been found in the Triassic of Afghanistan, Austria, Canada, China, Hungary, Italy, Japan, Malaysia, Oman, Papua New Guinea, Russia, Tunisia, Turkey, United States.[3]
References
[edit]
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