Ptychitaceae

Ptychitaceae
Temporal range: M - U Triassic
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Ammonoidea
Order: Ceratitida
Superfamily: Ptychitaceae
Families

see text

The Ptychitacheae is a superfamily of typically involute, subglobular to discoidal Ceratitida in which the shell is smooth with lateral folds or strigations, inner whorls are globose, and the suture is commonly ammonitic. Their range is Middle_ and Upper Triassic.

In its present configuration the Ptychitaceae includes three families, the:

This differs from the taxonomy in the Treatise, Part L, in which the Ptychitaceae included the

  • Ptychitidae
  • Isculitidae
  • Nannititdae

The Isculitidae have since been removed to the Pinacocerataceae and the Nannitidae to the Danubitaceae.

Fossils of the Ptychitaceae have been found in the Triassic of California and Nevada in the United States; British Columbia and Nunavut in Canada; Italy, Switzerland, and Hungary in Europe; Russia, China, and Afghanistan in Eurasia; Tunisia, Oman, Malaysia, and Papua New Guinea.


References

This article is issued from Wikipedia - version of the Friday, July 10, 2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.