Truncatellidae
Truncatellidae | |
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Two live individuals of Truncatella subcylindrica: a juvenile on the left, and an adult on the right | |
Scientific classification | |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
(unranked): | clade Caenogastropoda clade Hypsogastropoda clade Littorinimorpha |
Superfamily: | Truncatelloidea |
Family: | Truncatellidae Gray, 1840[1] |
Truncatellidae, common name the "looping snails", is a family of small amphibious snails, with gills and an operculum, semi-marine gastropod mollusks or micromollusks.
Contents
1 Shell description
2 Subfamilies
3 Genera
4 Habitat
5 Life cycle
6 References
7 External links
Shell description
This family of snails have small shells which lose their apical whorls as they continue to grow, giving the shells a truncated and cylindrical appearance.
Subfamilies
The family Truncatellidae consists of two subfamilies (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005):[2]
- subfamily Truncatellinae Gray, 1840
- subfamily Geomelaniinae Kobelt & Möllendorff, 1897[3]
Genera
Genera within the family Truncatellidae include:
Truncatellinae
Truncatella Risso, 1826[4] - type genus of the family Truncatellidae[2]
Geomelaniinae
Geomelania L. Pfeiffer, 1845 - type genus of the subfamily Geomelaniinae[2]
subfamily ?
- †Nystia
Taheitia Adams, 1863[4]
Habitat
Snails in this family are found in marine coastal environments, near or just above the high tide line on stones and pebbles, fine sediments and decomposing vegetation.
Life cycle
The sexes are separate. Fertilized eggs are laid as egg capsules, which are attached to detritus.
References
^ Gray (1840). Synopsis of the contents of the British Museum ed. 42: 117, 148.
^ abc Bouchet, Philippe; Rocroi, Jean-Pierre; Frýda, Jiri; Hausdorf, Bernard; Ponder, Winston; Valdés, Ángel & Warén, Anders (2005). "Classification and nomenclator of gastropod families". Malacologia. Hackenheim, Germany: ConchBooks. 47 (1–2): 1–397. ISBN 3-925919-72-4. ISSN 0076-2997..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output .citation q{quotes:"""""""'""'"}.mw-parser-output .citation .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12px-Wikisource-logo.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-maint{display:none;color:#33aa33;margin-left:0.3em}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}
^ Kobelt & Möllendorff (1897). Nachrichtsblatt der Deutschen Malakozoologischen Gesellschaft 29(5-6): 74.
^ ab "Mollusca" Archived 2012-06-26 at the Wayback Machine. Diversidad Biológica Cubana, accessed 23 March 2011.
External links
Wikimedia Commons has media related to Truncatellidae. |
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