Tropitoidea, formerly Tropitaceae, is an extinct
superfamily of
ammonite
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 ...
cephalopod
A cephalopod is any member of the molluscan Taxonomic rank, class Cephalopoda (Greek language, Greek plural , ; "head-feet") such as a squid, octopus, cuttlefish, or nautilus. These exclusively marine animals are characterized by bilateral symm ...
s in the
order
Order, ORDER or Orders may refer to:
* A socio-political or established or existing order, e.g. World order, Ancien Regime, Pax Britannica
* Categorization, the process in which ideas and objects are recognized, differentiated, and understood
...
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 ...
, containing the following families:
*
Didymitidae
*
Episculitidae
*
Haloritidae
*
Juvavitidae
*
Parathisbitidae
*
Thisbitidae
*
Tropiceltidae
*
Tropiceltitidae
*
Tropitidae
The Tropitidae is a family of Upper Triassic Ammonoidea belonging to the Tropitoidea, a superfamily of the Ceratitida
Tropitidae have subspherical to discoidal, involute to evolute shells with long body chambers and a ventral keel bordered by fur ...
References
The Paleobiology DatabaseAccessed on 1/14/12
Ceratitida superfamilies
{{Ceratitida-stub