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Ptychites

From Wikipedia, the free encyclopedia

Ptychites
Temporal range: Middle Triassic, 247.2 –235.0 Ma
Fossil of Ptychites studeri from Bosnia, on display at Galerie de paléontologie et d'anatomie comparée in Paris
Scientific classification Edit this classification
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

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  • 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

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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

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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

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