Newtoniellidae is a family of minute sea snails, marine gastropod mollusks or micromollusks in the superfamily Triphoroidea. It contains the following subfamilies :
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
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
