# Tropitidae

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{{Automatic taxobox
| fossil_range = U [Triassic](/source/Triassic)
| taxon = Tropitidae
| authority = Mojsisovics, 1875
}}

The '''Tropitidae''' is a family of Upper Triassic Ammonoidea belonging to the [Tropitoidea](/source/Tropitoidea), a superfamily of the [Ceratitida](/source/Ceratitida)

Tropitidae have subspherical to discoidal, involute to evolute shells with long body chambers and a ventral keel bordered by furrows. The surface may have ribs, nodes, or spines, or may be smooth. The [suture](/source/Ammonitic_suture) is generally ammonitic, but may be ceratitic to goniatitic.

The derivation of the Tropitidae is uncertain but they seem to form a group along with the [Tropiceltitidae](/source/Tropiceltitidae) and [Haloritidae](/source/Haloritidae) within the superfamily.

==Genera==
Tropididae genera included:<ref name="FW">[https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=86819  fossilworks.org - Tropitidae page]</ref>
*''[Acanthotropites](/source/Acanthotropites)''
*''[Anatropites](/source/Anatropites)''
*''[Arctotropites](/source/Arctotropites)''
*''[Arietoceltites](/source/Arietoceltites)''
*''[Discotropites](/source/Discotropites)''
*''[Euisculites](/source/Euisculites)''
*''[Gymnotropites](/source/Gymnotropites)''
*''[Homerites](/source/Homerites)''
*''[Homeroceras](/source/Homeroceras)''
*''[Hoplotropites](/source/Hoplotropites)''
*''[Indonesites](/source/Indonesites)''
*''[Jovites](/source/Jovites)''
*''[Margaritropites](/source/Margaritropites)''
*''[Microtropites](/source/Microtropites)''
*''[Paratropites](/source/Paratropites)''
*''[Paulotropites](/source/Paulotropites)''
*''[Platotropites](/source/Platotropites)''
*''[Pleurotropites](/source/Pleurotropites)''
*''[Sibyllites](/source/Sibyllites)''
*''[Tritropidoceras](/source/Tritropidoceras)''
*''[Tropites](/source/Tropites)''

== References ==
{{Reflist}}
* Arkell et al. Mesozoic Ammonoidea. [Treatise on Invertebrate Paleontology](/source/Treatise_on_Invertebrate_Paleontology), Part L, 1957
* Bernhard Kummel, 1952. A Classification of Triassic Ammonoids. Jour of Paleontology Vol. 26, No. 5, pp 847–853, Sept. 1952

{{Taxonbar|from=Q641294}}

Category:Tropitidae
Category:Tropitaceae
Category:Ceratitida families
Category:Late Triassic first appearances
Category:Late Triassic extinctions

{{Ceratitida-stub}}

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Adapted from the Wikipedia article [Tropitidae](https://en.wikipedia.org/wiki/Tropitidae) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Tropitidae?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.