# Tonnoidea

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{{Short description|Superfamily of gastropods}}
{{Automatic taxobox
| taxon = Tonnoidea
| image = Cabestana spengleri.jpg
| image_caption = A live but retracted individual of ''[Cabestana spengleri](/source/Cabestana_spengleri)'', a species in the [Ranellidae](/source/Ranellidae)
| authority = [Suter](/source/Henry_Suter), 1913 (1825)
| synonyms_ref = <ref name="WoRMS" />
| synonyms = Cassoidea (junior synonym)
| subdivision_ranks = Families
| subdivision = ''See text''
}}

The '''Tonnoidea''' are a [superfamily](/source/Taxonomic_rank) of [sea snail](/source/sea_snail)s, [marine](/source/marine_(ocean)) [gastropod](/source/gastropod) [mollusc](/source/mollusc)s  in the order [Littorinimorpha](/source/Littorinimorpha).<ref name="WoRMS">{{WRMS species|14777|Tonnoidea Suter, 1913 (1825)||4 December 2018}}</ref><ref>{{cite journal
 |author1=Bouchet, P.  |author2=Rocroi, J.-P.
  |name-list-style=amp | year = 2005
 | title = Classification and Nomenclator of Gastropod Families
 | journal = Malacologia
 | volume =47
 | issue = 1–2
 | pages = 
 | doi =
 }}</ref> This superfamily includes many very large species.

==Nomenclature==
Beu (1998, 2008) favours usage of Tonnoidea and Tonnidae rather than Cassoidea and Cassidae preferred by Riedel (1995). This is in agreement with the action of Thiele (1925) who placed Tonnidae and Cassidae under "stirps Tonnacea", therefore acting as first reviser under ICZN art. 24

==Families==
Families within the superfamily Tonnoidea include:<ref name="WoRMS" />
* [Bursidae](/source/Bursidae), the frog shells
* [Cassidae](/source/Cassidae), the helmet shells and bonnet shells
* [Charoniidae](/source/Charoniidae)
* [Cymatiidae](/source/Cymatiidae)
* [Laubierinidae](/source/Laubierinidae)
* [Personidae](/source/Personidae)
* [Ranellidae](/source/Ranellidae), the tritons
* [Thalassocyonidae](/source/Thalassocyonidae)
* [Tonnidae](/source/Tonnidae), the tun shells
;Families brought into synonymy:
* Aquillidae Pilsbry, 1904: synonym of [Cymatiinae](/source/Cymatiinae) Iredale, 1913 (1854)
* Distorsioninae Beu, 1981: synonym of [Personidae](/source/Personidae) Gray, 1854
* Doliidae Latreille, 1825: synonym of [Tonnidae](/source/Tonnidae) Suter, 1913 (1825)
* Galeodoliidae Sacco, 1891: synonym of [Tonnidae](/source/Tonnidae) Suter, 1913 (1825)
* Lampusiidae Newton, 1891: synonym of [Cymatiinae](/source/Cymatiinae) Iredale, 1913 (1854)
* Lotoriidae Harris, 1897: synonym of [Cymatiinae](/source/Cymatiinae) Iredale, 1913 (1854)
* Macgillivrayiidae H. Adams & A. Adams, 1854: synonym of [Tonnidae](/source/Tonnidae) Suter, 1913 (1825)
* Nyctilochidae Dall, 1912: synonym of [Cymatiinae](/source/Cymatiinae) Iredale, 1913 (1854)
* Oocorythidae P. Fischer, 1885: synonym of [Cassidae](/source/Cassidae) Latreille, 1825
* Personinae Gray, 1854: synonym of [Personidae](/source/Personidae) Gray, 1854 (original rank)
* Septidae Dall & Simpson, 1901: synonym of [Cymatiinae](/source/Cymatiinae) Iredale, 1913 (1854)
* Simpulidae Dautzenberg, 1900: synonym of [Cymatiinae](/source/Cymatiinae) Iredale, 1913 (1854)
* Tritoniidae H. Adams & A. Adams, 1853: synonym of [Ranellidae](/source/Ranellidae) Gray, 1854 (Invalid: type genus a junior homonym of ''[Tritonium](/source/Tritonium)'' O.F. Müller, 1776. Also homonym of Tritoniidae Lamarck, 1809 based on Tritonia Cuvier, 1797)

==References==
{{Reflist}}
* Millard, V. (1996). ''Classification of Mollusca: a classification of world wide Mollusca''. Victor G. Millard: Rhine Road, South Africa. {{ISBN|0-620-21261-6}}. 544 pp

==External links==
* {{Commons category-inline|Tonnoidea}}
* [https://doi.org/10.1016/j.ympev.2018.09.016 Strong E.E., Puillandre N., Beu A.G., Castelin M. & Bouchet P. (2019). Frogs and tuns and tritons – A molecular phylogeny and revised family classification of the predatory gastropod superfamily Tonnoidea (Caenogastropoda). Molecular Phylogenetics and Evolution. 130: 18-34]

{{Taxonbar|from=Q18710482|from2=Q1048434}}

Category:Tonnoidea
Category:Gastropod superfamilies

{{Caenogastropoda-stub}}

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