Ptychitaceae
Encyclopedia
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
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.
Ceratitida
The Ceratitida is an order that contains almost all ammonoid cephalopod genera from the Triassic as well as ancestral forms from the Upper Permian, the exception being the phylloceratids which gave rise to the great diversity of post Triassic ammonites....
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:
- PtychitidaePtychitidaeThe Ptychitidae comprises a family of ceratitid ammonites . They are combined currently with the Eosagenitidae and Sturiidae in the superfamily, Ptychitaceae....
- Eosagenitidae
- Sturiidae
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
Pinacocerataceae
The Pinacocerataceae are generally smooth, compressed, evolute to involute ammonoids from the Triassic, belonging to the Ceratitida, in which the suture is ammonitic, with adventitious and auxiliary elements....
and the Nannitidae to the Danubitaceae
Danubitaceae
AmmonoideaThe Danubitaceae is a large and diverse superfamily in the Order Ceratitida of the Ammonoidea that combines five families removed from the Ceratitaceae, Clydonitaceae, and Ptychitaceae.- Taxonomy:Superfamily Danubitaceae* Fam. Aplococeratidae...
.
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
- Treatise on Invertebrate Paleontology, Part L, Ammonoidea. R. C. Moore (ed). Geological Society of America and Univ of Kansas press, 1957
- superfamily Ptychitaceae Mojsisovics 1882 Paleobiology DB