Newtoniellidae

Newtoniellidae is a family of minute sea snails, marine gastropod mollusks or micromollusks in the superfamily Triphoroidea. It contains the following subfamilies :
 * † Gothicispira Maxwell, 1988
 * † Miopila Finlay, 1926
 * Retilaskeya B. A. Marshall, 1978
 * Adelacerithiinae
 * Adelacerithium Ludbrook, 1941
 * Ataxocerithiinae
 * Ataxocerithium Tate, 1894
 * Eumetulinae
 * Cerithiopsida Bartsch, 1911
 * Embrionalia Golikov, 1988
 * Eumetula Thiele, 1912
 * Furukawaia Kuroda & Habe in Habe, 1961
 * Marshallaskeya Gründel, 1980
 * Laeocochlidinae
 * Laeocochlis Dunker & Metzger, 1875
 * Sasamocochlis Gründel, 1980
 * Newtoniellinae
 * Cerithiella Verrill, 1882
 *  Granulotriforis Kosuge, 1967
 * Paramendax A. W. B. Powell, 1937: synonym of Trituba Jousseaume, 1884
 * Trituba Jousseaume, 1884
 * Genera brought into synonymy :
 * Altispecula Powell, 1930: synonym of Eumetula (Altispecula) Powell, 1930 represented as Eumetula Thiele, 1912
 * Binda Laseron, 1951: synonym of Cerithiella Verrill, 1882
 * Cerithiolinum Locard, 1903: synonym of Cerithiella Verrill, 1882
 * Chasteria Iredale, 1915: synonym of Cerithiella Verrill, 1882
 * Eumeta Mörch, 1868: synonym of Eumetula Thiele, 1912
 * Euseila Cotton, 1951: synonym of Cerithiella Verrill, 1882
 * Furukuwaia: synonym of Furukawaia Kuroda & Habe in Habe, 1961
 * Geminataxum Iredale, 1936: synonym of Ataxocerithium Tate, 1894
 * Laiocochlis Dunker & Metzger, 1874: synonym of Laeocochlis Dunker & Metzger, 1874
 * Laskeya Iredale, 1918: synonym of Eumetula Thiele, 1912
 * Lovenella G. O. Sars, 1878: synonym of Cerithiella Verrill, 1882
 * Newtonia Cossman, 1892: synonym of Cerithiella Verrill, 1882
 * Newtoniella Cossman, 1893: synonym of Cerithiella Verrill, 1882
 * Stilus Jeffreys, 1885: synonym of Cerithiella Verrill, 1882
 * Tauroforis Sacco, 1895: synonym of Trituba Jousseaume, 1884