{{Short description|Family of gastropods}} {{Automatic taxobox |taxon = Tonnidae |image = Tonna_tankervillii.JPG |image_caption = A shell of ''Tonna tankervillii'' (Hanley, 1860) |authority = Suter, 1913 (1825) |synonyms_ref = <ref name="WoRMS">MolluscaBase eds. (2020). MolluscaBase. Rhytididae Pilsbry, 1893. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=816183 on 2020-10-22</ref> |synonyms = * Doliidae <small>Latreille, 1825</small> * Galeodoliidae <small>Sacco, 1891</small> * Macgillivrayiidae <small>H. Adams & A. Adams, 1854</small> | subdivision_ranks = Genera | subdivision = ''See text'' }}
The '''Tonnidae''' are a family of medium-sized to very large sea snails, known as the '''tun shells'''. These are marine gastropod molluscs in the clade Littorinimorpha. The name ''tun'' refers to the snails' shell shape, which resembles wine casks known as "tuns". While thin, the shells are also strong and lack opercula. They are found in all tropical seas, where they inhabit sandy areas. During the day, they bury themselves in the substrate, emerging at night to feed on echinoderms (especially sea cucumbers), crustaceans, and bivalves. Some larger species also capture fish, using their expandable probosces to swallow them whole. Females lay rows of eggs that become free-swimming larvae for several months before settling to the bottom.<ref>Rehder, Harold A., 1981, National Audubon Society Field Guide to Shells, pg. 503</ref>
== Taxonomy == In 2005, these subfamilies were recognized in the taxonomy of Bouchet & Rocroi: *Cassinae Latreille, 1825 *Oocorythinae P. Fischer, 1885 *Phaliinae Beu, 1981 *Tonninae Suter, 1913
Bouchet & Rocroi (2005) listed Cassidae as a synonym of Tonnidae Suter, 1913 (1825), following Riedel (1995) in this. However, later Beu (2008: 272) separated the two families.<ref>Beu A. G. (2008). "Recent deep-water Cassidae of the world. A revision of ''Galeodea'', ''Oocorys'', ''Sconsia'', ''Echinophoria'' and related taxa, with new genera and species (Mollusca, Gastropoda)". In: Héros V., Cowie R. H. & Bouchet P. (eds). "Tropical Deep-Sea Benthos 25". ''Mémoires du Muséum National d'Histoire Naturelle'' '''196''': 269-387. [http://cat.inist.fr/?aModele=afficheN&cpsidt=21934507 abstract in French].</ref> This is in agreement with the action of Thiele (1925) who placed Tonnidae and Cassidae under "Tonnacea", therefore acting as first reviser under ICZN article 24. In this respect, the World Register of Marine Species follows the opinion of Beu.<ref>Gofas, S. (2011). Cassidae. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=22999 on 2011-02-23</ref>
==Genera== Genera and species within the family Tonnidae include:
The subfamily Cassinae has been raised to the rank of family Cassidae
* ''Eudolium'' <small>Dall, 1889</small> * ''Malea''<small> Vallenciennes, 1832</small> * ''Tonna'' <small>Brunnich, 1771</small> ;Genera brought into synonymy : * ''Cadium'' Link, 1807 : synonym of ''Tonna'' Brunnich, 1771 * ''Cadus'' Röding, 1798 : synonym of ''Tonna'' Brunnich, 1771 * ''Cassidaria'' Link, 1807 : synonym of ''Eudolium'' Dall, 1889 * ''Doliopsis'' di Monterosato, 1872 (non Vogt, 1852; non Conrad, 1865) : synonym of ''Eudolium'' Dall, 1889 * ''Foratidolium'' Rovereto, 1899: synonym of ''Tonna'' Brünnich, 1771 * ''Macgillivrayia'' Forbes, 1852 : synonym of ''Tonna'' Brünnich, 1771 * ''Dolium'' Lamarck, 1801: synonym of ''Tonna'' Brunnich, 1771 * ''Parvitonna'' Iredale, 1931: synonym of ''Tonna'' Brunnich, 1771 * ''Perdix'' Montfort, 1810: synonym of ''Tonna'' Brunnich, 1771 * ''Quimalea'' Iredale, 1929: synonym of Malea Valenciennes, 1832
==Further reading== * Vaught, K.C. (1989). ''A classification of the living Mollusca''. American Malacologists: Melbourne, FL (USA). {{ISBN|0-915826-22-4}}. XII, 195 pp.
==References== {{Reflist}}
== External links == {{Commons category|Tonnidae}} * [https://web.archive.org/web/20070221053405/http://www.mollusca.co.nz/checklist/checklist_frameset.htm Checklist of Mollusca] * [https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=62536 Paleodb]
{{Taxonbar|from=Q1517807}} {{Authority control}}
Category:Tonnidae