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