Tornidae is a family of very small and minute sea snails with an operculum, marine gastropod mollusks in the clade Littorinimorpha. This family used to be known as the Vitrinellidae. Iredale has shown that the family Adeorbidae should be called Tornidae
Family names cited with two dates (the second one in parentheses) are those ruled by Article 40(2) of ICZN. "If ... a family-group name was replaced before 1961 because of the synonymy of the type genus, the replacement name is to be maintained if it is in prevailing usage. A name maintained by virtue of this Article retains its own author [and date, the first date cited] but takes the priority of the replaced name [the date cited in parentheses, here alluding to Adeorbidae Monterosato, 1884]
The shells of the snails in this family are minute, colorless and glassy.
The paucispiral shell is umbilicated, auriform and depressed. The entire aperture is oblique. The shell has a simple columella, and a rounded, sharp outer lip. The corneous operculum is paucispiral, and has an eccentric nucleus.
The body of the animal differs from species in the family Trochidae by having no cirriform appendages of the foot. The radula is taenioglossate. (Thiele, 1925)
The following subfamilies were recognized in the 2005 taxonomy of Bouchet & Rocroi, but have now become alternate representations:
Circulinae Fretter & Graham, 1962Torninae Sacco, 1896 (1884)Teinostomatinae Cossmann, 1917Vitrinellinae Bush, 1897Genera in the family Tornidae include:
Subfamily Vitrinellinae
Cyclostremiscus Pilsbry & Olsson, 1945Subfamily Circulinae
Circulus Jeffreys, 1865Subfamily ?
Anticlimax Pilsbry & McGinty, 1946Aorotrema Schwengel & McGinty, 1942Canimarina Aguayo & Borro, 1946Caperella Laseron, 1958Circlotoma Laseron, 1958Circulter Laseron, 1958Cochliolepis Stimpson, 1958Discopsis de Folin, 1870Discreliotia Laseron, 1958Elachorbis Iredale, 1914Episcynia Mörch, 1875Esmeralda Pilsbry & Olsson, 1952Laciniorbis Martens, 1897Lydiphnis Melvill, 1906Moeniatoma Laseron, 1958Neusas Warén & Bouchet, 2001Ovini Simone, 2013Panastoma Pilsbry & Olsson, 1945Parviturboides Pilsbry & McGinty, 1949Peripitoma Laseron, 1958Pleuromalaxis Pilsbry & McGinty, 1945Ponderinella Marshall, 1988Pseudoliotia Tate, 1898Pygmaeorota Kuroda & Habe, 1952Scissilabra Bartsch, 1907Scrupus Finlay, 1927Sigaretornus Iredale, 1936Solariorbis Conrad, 1865Teinostoma H. Adams & A. Adams, 1853Tholostoma Laseron, 1958Tornus Turton & Kingston, 1830Uzumakiella Habe, 1958Vitridomus Pilsbry & Olsson, 1945Vitrinella C.B. Adams, 1850Vitrinorbis Pilsbry & Olsson, 1952Woodringilla Pilsbry & Olsson, 1951Genera brought into synonymyAdeorbis S.V. Wood, 1842: synonym of Tornus Turton & Kingston, 1830Climacia Dall, 1903: synonym of Anticlimax Pilsbry & McGinty, 1946Climacina Aguayo & Borro, 1946: synonym of Anticlimax Pilsbry & McGinty, 1946Liochrysta Laseron, 1958: synonym of Pseudoliotia Tate, 1898Lioprora Laseron, 1958: synonym of Canimarina Aguayo & Borro, 1946Miralabrum Pilsbry & Olsson, 1945: synonym of Cyclostremiscus Pilsbry & Olsson, 1945Ponocyclus Pilsbry, 1953: synonym of Cyclostremiscus Pilsbry & Olsson, 1945Pseudorotella P. Fischer, 1857: synonym of Teinostoma H. Adams & A. Adams, 1853Pygmaerota Kuroda & Habe, 1952: synonym of Pygmaeorota Kuroda & Habe, 1954Soyorota Habe, 1961: synonym of Circulus Jeffreys, 1865Tinostoma P. Fischer, 1885: synonym of Teinostoma H. Adams & A. Adams, 1853Alternate representationsSubfamily Circulinae Fretter & Graham, 1962Subfamily Teinostomatinae Cossmann, 1917Subfamily Torninae Sacco, 1896 (1884)Subfamily Vitrinellinae Bush, 1897
