Trissexodontidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea (according taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

This family has no subfamilies.[3] The family Trissexodontidae was separated out from the from families Hygromiidae and Helicodontidae,[3] and some authors still classify these species within those families.



The distribution of Trissexodontidae includes the Iberian peninsula, northwest Africa,[4] Azores,[5] Canary Islands, Madeira and Cape Verde.[6]


Genera within the family Trissexodontidae include:


Shells of species in the family Trissexodontidae are flat and regularly ribbed. The periostracum of the shell surface has no hairs.[4]

A description of the reproductive system was summarized by Prieto et al. (1993).[4]

In this family, the number of haploid chromosomes is known only for the genus Oestophora (n=30).[4]


  1. ^ (German) Nordsieck H. (1987). "Revision des Systems der Helicoidea (Gastropoda: Stylommatophora)". Archiv für Molluskenkunde 118(1-3): 9-50. page 30.
  2. ^ Schileyko A. A. (1991). "Taxonomic status, phylogenetic relations and system of the Helicoidea sensu lato (Pulmonata)". Archiv für Molluskenkunde 120(4-6): 187-236. page 225.
  3. ^ a b c Bouchet P., Rocroi J.-P., Frýda J., Hausdorf B., Ponder W., Valdés Á. & Warén A. (2005). "Classification and nomenclator of gastropod families". Malacologia: International Journal of Malacology (Hackenheim, Germany: ConchBooks) 47 (1-2): 1–397. ISBN 3925919724. ISSN 0076-2997.
  4. ^ a b c d e f g h i j k l m Prieto C. E., Puente A. I, Altonaga K. & Gomez J. (1993). "Genital morphology of Caracolina lenticula (Michaud, 1831), with a new proposal of classification of helicodontoid genera (Pulmonata: Hygromioidea)". Malacologia 35(1): 63-77. page 73-74.
  5. ^ "Genus summary for Oestophora". AnimalBase, last modified 17 July 2008, accessed 13 January 2011.
  6. ^ "Genus summary for Caracollina". AnimalBase, last modified 17 August 2007, accessed 13 January 2011.
  7. ^ "Genus taxon summary for Spirorbula". AnimalBase, last modified 09 September 2008, accessed 13 January 2011.
  8. ^ "Suboestophora Ortiz de Zarate Lopez 1962". Fauna Europaea, accessed 13 January 2011.
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