{{Automatic taxobox | fossil_range = U Triassic | taxon = Tropitidae | authority = Mojsisovics, 1875 }}
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 furrows. The surface may have ribs, nodes, or spines, or may be smooth. The 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 and 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'' *''Anatropites'' *''Arctotropites'' *''Arietoceltites'' *''Discotropites'' *''Euisculites'' *''Gymnotropites'' *''Homerites'' *''Homeroceras'' *''Hoplotropites'' *''Indonesites'' *''Jovites'' *''Margaritropites'' *''Microtropites'' *''Paratropites'' *''Paulotropites'' *''Platotropites'' *''Pleurotropites'' *''Sibyllites'' *''Tritropidoceras'' *''Tropites''
== References == {{Reflist}} * Arkell et al. Mesozoic Ammonoidea. 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
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Category:Tropitidae Category:Tropitaceae Category:Ceratitida families Category:Late Triassic first appearances Category:Late Triassic extinctions
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