Leionucula gabbi (FOSSIL) (Stanton, 1895 †)
Nucula gabbiana (FOSSIL) R.E. Dickerson, 1916 †
Ennucula gackhensis (FOSSIL) Krishtofovich, 1984 †
Austronucula galatheae R.K. Dell, 1956
Truncacila galinae (FOSSIL) Slodkewitsch, 1967 †
Varinucula gallinacea (FOSSIL) (Finlay, 1930 †)
Lamellinucula gemmulata T. Habe, 1953
Ennucula georgiana (R.K. Dell, 1964)
Nucula georgiana (FOSSIL) C.G. Semperin J.P.J. Ravn, 1907 †
Nucula getkilnensis (FOSSIL) Devjatilova, 1981 †
Acila gettysburgensis (FOSSIL) (Reagan, 1909 †)
Nuculopsis gibbosa (FOSSIL) J. Fleming, 1828 †
Nuculopsis girtyi (FOSSIL) H.G. Schenck, 1934 †
Nuculopsis glendonensis (FOSSIL) (J.B.M. Dana, 1849 †)
Trigonucula goniocostata (FOSSIL) Hautmann 2001 †
Economolopsis gordoni (FOSSIL) Hoare & al., 1989 †
Truncacila gottschei (FOSSIL) (Böhm, 1916 †)
Nucula gracilenta (FOSSIL) S.V. Wood †
Truncacila grahami (FOSSIL) R.L. Squires & Saul,2006 †
Leionucula grandis (FOSSIL) Malumian & al., 1978 †
Ennucula grangei (FOSSIL) (J. Marwick, 1926 †)
Acila granulata (E.A. Smith, 1906)
Ennucula granulosa (A.E. Verrill, 1884)
Ennucula grayi (A.V.M.D. D'Orbigny,1846)
Nucula greppini (FOSSIL) G.P. Deshayes, 1858 †
Nuculopsis guangxiensis (FOSSIL) Yang & al., 2016 †
Leionucula haboroensis (FOSSIL) (S. Kanno & Matsuno,1960 †)
Nuculoma haesendoncki (FOSSIL) (P. Nyst& G.D. Westendorp, 1839 †)
Nuculoma haesendoncki hanseata (FOSSIL) (F. Kautsky, 1925) †
Truncacila haidana (FOSSIL) A. Packard, 1936 †
Nucula hanleyi R. Winckworth, 1931
Leionucula hannibali (FOSSIL) (Clark, 1925 †)
Nuculoidea hanoverensis (FOSSIL) Kindle †
Linucula hartvigiana (W.L.H. Dohrn, 1864)
Nucula hawaiensis H.A. Pilsbry, 1921