Trochoidea (superfamily)

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Temporal range: Ordovician–Recent[1]
Tegula pulligo.jpg
A live individual of Tegula pulligo
Scientific classification e
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Clade: Vetigastropoda
Order: Trochida
Superfamily: Trochoidea
Rafinesque, 1815

See text

  • Angarioidea Gray, 1857
  • Phasianelloidea Swainson, 1840
  • Trochacea (suffix -oidea mandatory for a superfamily name following current ICZN art. 29.2.)
  • Turbinoidea Rafinesque, 1815

Trochoidea is a superfamily of small to very large vetigastropod sea snails with gills and an operculum.[2] Species within this superfamily have nacre as the inner shell layer. The families within this superfamily include the Trochidae, the top snails. This superfamily is the largest vetigastropodan superfamily, containing more than 2,000 species.[3]

This taxon is not the same as a pulmonate land snail genus which is spelled the same way: Trochoidea (genus).


2005 taxonomy[edit]

This superfamily consisted of nine following families (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005):

2017 taxonomy[edit]

Williams et al. (2008)[4] have made further refinements to the taxonomy of Trochoidea. The revised taxonomy as defined by Bouchet et al. (2017) resulted in the following families [5]. The fossil families, tentatively included in this list, are based on Tracey et al. (1993) [6]

Unassigned to a family:

Nomen dubium
Families brought into synonymy
  • Crosseolidae Hickman, 2013: synonym of Conradiidae Golikov & Starobogatov, 1987
  • Cyclostrematidae P. Fischer, 1865: synonym of Liotiidae Gray, 1850
  • Delphinulidae Stoliczka, 1868: synonym of Angariidae Gray, 1857
  • Gazidae Hickman & McLean, 1990: synonym of Margaritidae Thiele, 1924
  • Minoliinae Kuroda, Habe & Oyama, 1971: synonym of Solariellidae Powell, 1951
  • † Parataphrinae Calzada, 1989: synonym of † Proconulidae Cox, 1960
  • Stomatellidae Gray, 1840: synonym of Stomatellinae Gray, 1840
  • Stomatiidae Carpenter, 1861: synonym of Stomatellinae Gray, 1840
  • Tricoliidae Woodring, 1928: synonym of Tricoliinae Woodring, 1928 (rank change)


  1. ^ Lindberg, edited by Winston F. Ponder, David R. (2008). Phylogeny and evolution of the Mollusca. Berkeley: University of California Press. ISBN 978-0-520-25092-5.CS1 maint: Extra text: authors list (link)
  2. ^ Gofas, S. (2013). Trochoidea. Accessed through: World Register of Marine Species at on 2013-06-29
  3. ^ Williams, S.T. (2012). Advances in molecular systematics of the vetigastropod superfamily Trochoidea. —Zoologica Scripta, 41, 571–595
  4. ^ Williams S. T., Karube S. & Ozawa T. (September 2008) "Molecular systematics of Vetigastropoda: Trochidae, Turbinidae and Trochoidea redefined". Zoologica Scripta 37(5): 483-506. doi:10.1111/j.1463-6409.2008.00341.x
  5. ^ "Revised Classification, Nomenclator and Typification of Gastropod and Monoplacophoran Families" by Philippe Bouchet & Jean-Pierre Rocroi, Bernhard Hausdorf, Andrzej Kaim, Yasunori Kano, Alexander Nützel, Pavel Parkhaev, Michael Schrödl and Ellen E. Strong in Malacologia, 2017, 61(1–2): 1–526
  6. ^ Tracey S., J.A. Todd & D.H. Erwin, 1993, Mollusca: Gastropoda. Pp. 131–167, in: M. J. Benton, ed., The Fossil Record, volume 2. chapman & hall, london. 845 pp.
  7. ^ a b Williams S.T., Donald K.M., Spencer H.G. & Nakano T. (2010) Molecular systematics of the marine gastropod families Trochidae and Calliostomatidae (Mollusca: Superfamily Trochoidea). Molecular Phylogenetics and Evolution 54:783-809.