Psiloceratidae

Psiloceratidae
Temporal range: from Triassic to Cretaceous, 205.6– 66.043 Ma [1]
Fossil shells of Psiloceras planorbis from Germany, 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: †Ammonitida
Superfamily: †Psiloceratoidea
Family: †Psiloceratidae
Hyatt, 1867
Synonyms
  • Caloceratidae Buckman, 1906

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

[1]

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

  1. ^ a b c The Paleobiology Database
  • 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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