Planaxidae
Family of gastropods
title: "Planaxidae" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["planaxidae", "gastropod-families", "taxa-named-by-john-edward-gray", "fauna-of-the-pantropical-realm"] description: "Family of gastropods" topic_path: "general/planaxidae" source: "https://en.wikipedia.org/wiki/Planaxidae" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::summary Family of gastropods ::
|fossil_range = Cretaceous(?) - Recent |image = Planaxis lineatus DaCosta, 1778 (4311229091).jpg |image_caption = An apertural view of a shell of Angiola fasciata. |taxon = Planaxidae |authority = Gray, 1850 |synonyms_ref = |synonyms = |type_species = |display_parents = 3
Planaxidae, commonly called planaxids or clusterwinks, are a taxonomic family of small and minute sea snails, pantropical marine gastropod molluscs in the superfamily Cerithioidea. They live on rocky shores in the littoral zone of the tropics and subtropics.
Characteristics
Planaxids are known as clusterwinks because of their habit of clustering together in concealed, moist locations when the tide is out. They have conical shells resembling periwinkles, except for the wide, shallow anterior canals. They brood their embryos in a chamber behind their heads, releasing them into the sea as veliger larvae to form part of the plankton.
Subfamilies
The following two subfamilies are recognized in the taxonomy of Bouchet & Rocroi (2005):
- Planaxinae Gray, 1850
- Fossarinae A. Adams, 1860 - previously in a family of its own, named Fossaridae
Genera
The family Planaxidae comprises the following genera: The following genera are recognised:
Planaxinae
- † Cabania Lozouet & Senut, 1985
- Fissilabia Macgillivray, 1836
- Halotapada Iredale, 1936
- Hinea Gray, 1847
- Holcostoma H. Adams & A. Adams, 1853
- † Leioplanaxis Lozouet & Maestrati, 1994
- † Orthochilus Cossmann, 1889
- Planaxis Lamarck, 1822
- Simulathena Houbrick, 1992
- Supplanaxis Thiele, 1929 ;Synonyms:
- Angiola Dall, 1926: synonym of Hinea Gray, 1847
- Leucostoma Swainson, 1840: synonym of Fissilabia MacGillivray, 1836 (invalid: junior homonym of Leucostoma Meigen, 1803 [Diptera])
- Quoyia Gray, 1839: synonym of Fissilabia MacGillivray, 1836
Fossarinae
- Anafossarus Iredale, 1936
- Chilkaia Preston, 1915
- Fossarus Philippi, 1841
- Larinopsis J. H. Gatliff & C. J. Gabriel, 1916
- † Medoriopsis Cossmann, 1888
- † Vouastia Raspail, 1909
;Synonyms:
- Fossar Gray, 1847: synonym of Fossarus Philippi, 1841 (invalid: unjustified emendation of Fossarus)
- Maravignia Aradas & Maggiore, 1844: synonym of Fossarus Philippi, 1841
References
- Strong E.E., Colgan D.J., Healy J.M., Lydeard C., Ponder W.F. & Glaubrecht M. (2011) Phylogeny of the gastropod superfamily Cerithioidea using morphology and molecules. Zoological Journal of the Linnean Society 162: 43–89.
- Bouchet P., Rocroi J.P., Hausdorf B., Kaim A., Kano Y., Nützel A., Parkhaev P., Schrödl M. & Strong E.E. (2017). Revised classification, nomenclator and typification of gastropod and monoplacophoran families. Malacologia. 61(1-2): 1–526.
References
- Mahmoud, L.G. Etudes paleontologiques sur la fauna Cretacique du Massif du Moghara (Sinai-Egypte). Publications de I'Institut du Desert d'Egypte 8, 1956
- Beechey, Des. (2008). "Family Planaxidae". The Seashells of New South Wales.
- Houbrick R. S. (1987). "Anatomy, Reproductive Biology, and Phylogeny of the Planaxidae (Cerithiacea: Prosobranchia)". ''Smithsonian Contributions to Zoology'' '''445'''.
::callout[type=info title="Wikipedia Source"] This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page. ::