【左锥螺科】
左锥螺科（学名：Triphoridae），又名锥折螺科page1=39、三孔螺科shelldoc_200001或三口螺科Pan 1998，是新进腹足类支序腹足纲软体动物之下翼舌类非正式群组一个海螺的科。本科物种的体积皆非常小，几乎全部都可归类为微小贝，而且几乎所有贝壳的手性皆为左旋WoRMS_131。在较旧的分类，本科是异腹足目的成员TaiBNET。
==型态描述==
本科物种螺壳的体积皆属小型，而且有很多层卷曲，
and extremely high-spired, with numerous narrow whorls which often have distinctive sculpture.
本科物种大多数螺壳的手性皆为左旋WoRMS_131，这一点在海洋腹足纲软体动物来讲比较罕见Marshall 1983。
==分类学==
布歇特和洛克罗伊的腹足类分类 (2005年)列出左锥螺科物种可分为下列三个亚科Bouchet 2005：
*三口螺亚科 Iniforinae Kosuge, 1966
*Metaxiinae Marshall, 1977
*左锥螺亚科 Triphorinae Gray, 1847
===属===
综合TaiBIF、ITIS及其他参考文献，本科包括下列各属ITIS_72188WoRMS_131：
*三口螺亚科 Iniforinae Kosuge, 1966：皆为海洋物种；
**Differoforis Kosuge, 2008；异名：Risbecia Kosuge, 1966
**三口螺属 Iniforis Jousseaume, 1884
**Mastoniaeforis Jousseaume, 1884；异名有：Contraforis Laseron, 1958、Epiforis Laseron, 1958、Mastoniaeformis（拼写错误）
*Metaxiinae Marshall, 1977
**†Antiphora Nützel, 1997
**†Eorex Nützel, 1997
**Metaxia Monterosato, 1884
*左锥螺亚科 Triphorinae Gray, 1847
**Aclophora Laseron, 1958
**Aclophoropsis B. A. Marshall, 1983
**布氏左锥螺属 Bouchetriphora B. A. Marshall, 1983
**†Callitriphora Cotton, 1947
**Cautor Finlay, 1926
**Cautotriphora Laws, 1940
**Cheirodonta B. A. Marshall, 1983
**†Cinctrifora Olsson & Harbison, 1953
**玄珠螺属 Coriophora Laseron, 1958
**Cosmotriphora Olsson & Harbison, 1953
**Costatophora B. A. Marshall, 1994
**†Eocautor Eames, 1952
**†Epetrium G. F. Harris & Burrows, 1891
**扁粒螺属 Euthymella Thiele, 1929
**Eutriphora Cotton & Godfrey, 1931
**Hedleytriphora B. A. Marshall, 1983
**Huetriphora Caro & Bertrand, 2020：只有Huetriphora raymondi Caro & Bertrand, 2020，一个物种，见于非洲印度洋的留尼旺；
**Hypotriphora Cotton & Godfrey, 1931
**格粒螺属 Inella Bayle, 1879
**Ionthoglossa Vinola-Lopez & Bouchet, 2020：只有一个物种Ionthoglossa pseudocanarica (Bouchet, 1985)，旧属Cosmotriphora属，分布于地中海及大西洋东北部；异名：Pogonodon Bouchet, 1997；
**Isotriphora Cotton & Godfrey, 1931
**Latitriphora B. A. Marshall, 1983
**Liniphora Laseron, 1958
**Litharium Dall, 1924
**Magnosinister Laseron, 1954
**Marshallora Bouchet, 1985
**双珠螺属 Mastonia Hinds, 1843
**Monophorus Grillo, 1877：异名有Notosinister Finlay, 1926（即参珠螺属TaiBNET）；
**Nanaphora Laseron, 1958
**†Norephora Gründel, 1975
**Nototriphora B. A. Marshall, 1983
**Obesula Jousseaume, 1897
**†Ogivia G. F. Harris & Burrows, 1891
**Opimaphora Laseron, 1958
** †Oriforina Gründel, 1975
**Sagenotriphora B.A. Marshall, 1983
**Seilarex Iredale, 1924
**Similiphora Bouchet, 1985
**Strobiligera Dall, 1924
**Subulophora Laseron, 1958
**†Subviriola Amitrov & Zhegallo, 2007
**Sychar Hinds, 1843
**Talophora Gründel, 1975
**Teretriphora Finlay, 1927
**左锥螺属 Triphora de Blainville, 1828
**双肋螺属 Viriola Jousseaume, 1884
**Viriolopsis B. A. Marshall, 1983
异名：
* Biforina Bucquoy, Dautzenberg & Dollfus, 1884 : synonym of Monophorus Grillo, 1877
* Brucetriphora Beu, 2004: synonym of Costatophora B. A. Marshall, 1994
* Distophora Laseron, 1958:synonym of Cautor Finlay, 1927
* Epiforis Laseron, 1958:synonym of Mastoniaeforis Jousseaume, 1884
* Euthymia Jousseaume, 1884:synonym of Euthymella Thiele, 1929
* Ino Hinds, 1843:synonym of Inella Bayle, 1879
* Macrosinister:synonym of Magnosinister Laseron, 1954
* Mastoniaeformis sic : synonym of Mastoniaeforis Jousseaume, 1884
* Mesophora Laseron, 1958：Coriophora Laseron, 1958的旧称，因与其他分类单元同名而于2013年改名。
* Orbitophora Laseron, 1958:synonym of Viriola Jousseaume, 1884
* Risbecia  Kosuge, 1966:synonym of Differoforis Kosuge, 2008
* Sinistroseila W. R. B. Oliver, 1915: synonym of Viriola Jousseaume, 1884
* Solosinister Laseron, 1954:synonym of Viriola Jousseaume, 1884
* Tetraphora  Laseron, 1958:synonym of Brucetriphora Beu, 2004
* Torresophora Laseron, 1958: synonym of Euthymella Thiele, 1929
* Triforis Deshayes, 1834:synonym of Triphora Blainville, 1828
* Triphoris:synonym of Triphora Blainville, 1828
==参考文献==
==外部连结==
* Triphoridae