The Danubitoidea is a large and diverse superfamily in the order

Ceratitida 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 ammon ...

of the

Ammonoidea Ammonoids are extinct, (typically) coiled-shelled cephalopods comprising the subclass Ammonoidea. They are more closely related to living octopuses, squid, and cuttlefish (which comprise the clade Coleoidea) than they are to nautiluses (family N ...

that combines five families removed from the Ceratitaceae, Clydonitaceae, and Ptychitaceae.

Taxonomy

Superfamily Danubitoidea * Family

Aplococeratidae Aplococeratidae is a family of Ceratitida, ceratitids from the Middle Triassic with very simplified sutures and a tendency to lose their ornamentation. Shells are generally evolute, more or less compressed, with rounded venters. Ornamentation if ...

* Family Danubitidae * Family Lecanitidae * Family Longobarditidae * Family Nannitidae The largest family in the Danubitoidea is the Longobarditidae with 11 genera distributed among three subfamilies plus three of undetermined placement. Smallest families are the Lecanitidae and Nannitidae, each represented by a single genus.

Distribution and range

Fossils of the Danubitoidea have been found in the Triassic of Afghanistan, Russia, China, Papua New Guinea; Italy, Switzerland, Hungary; British Columbia, Yukon, Nunavut; Idaho, Nevada, and California.

References

*Classification of E. T. Tozer 1981

E. T. Tozer. 1981. Triassic Ammonoidea: Classification, evolution and relationship with Permian and Jurassic Forms. The Ammonoidea: The evolution classification, mode of life and geological usefulness of a major fossil group 66-100 *Classification of E. T. Tozer 199

E. T. Tozer. 1994. Canadian Triassic Ammonoid Faunas. Geological Survey of Canada Bulletin 467:1-663 *

Treatise on Invertebrate Paleontology The ''Treatise on Invertebrate Paleontology,'' published from 1953–2007 by the Geological Society of America and the University of Kansas, then 2009–present by the University of Kansas Paleontological Institute, is a definitive multi-authore ...

, Part L, Ammonoidea. R. C. Moore (ed) Geol Soc of America and Univ of Kansas press, 1957. {{Taxonbar, from=Q5221281 Ceratitida superfamilies Triassic first appearances Triassic extinctions