Sigapatella gigantea (FOSSIL) (A.G. Beu, 1970 †)
Crucibulum giganteum (FOSSIL) Gardner, 1877 †
Crepidula glottidiarum W.H. Dall, 1905
Crepidula goreensis (J.F. Gmelin, 1791)
Crucibulum grande (FOSSIL) (T. Say, 1824 †)
Grandicrepidula grandis (A.T. von Middendorff,1849)
Bostrycapulus gravispinosus (Kuroda & T. Habe, 1950)
Calyptraea grayana (FOSSIL) R. Tate, 1865 †
Crepipatella greensboroensis (FOSSIL) Martin, 1904 †
Crepidula gryphaea É.A.A. Locard, 1898
Crepidula hainsworthi (FOSSIL) Johnston, 1885 †
Maoricrypta haliotoidea (FOSSIL) J. Marwick, 1926 †
Sigapatella hedleyi (E.A. Smith, 1915)
Calyptraea helicoidea (G.B. III Sowerby, 1883)
Grandicrepidula hemispherica (FOSSIL) A.G. Beu, 2010 †
Bostrycapulus heteropoma R. Collin & E. Rolán,2010
Dispotaea imbricata (FOSSIL) Sowerby, 1824 †
Maoricrypta immersa (G.F. Angas, 1865)
Crepidula incurva W.J. Broderip, 1834
Calyptraea inexpectata E. Rolán, 2004
Crepidula iniquita (FOSSIL) Clark & J.W. Durham,1946 †
Dispotaea insculpta (FOSSIL) P.O. Jung, 1965 †
Crepidula intratesta L.R.L. Simone, 2006
Crepidula isabellae Is. Taki, 1938
Crepidula isimotoi (FOSSIL) Y. Otuka, 1934 †
Crepidula jimboana (FOSSIL) M. Yokoyama, 1931 †
Calyptraea kilburni (FOSSIL) B.F. Kensley & Pether,1986 †
Maoricrypta kopua B.A. Marshall, 2003
Sigapatella lamellaria (FOSSIL) (Finlay & J. Marwick,1937 †)
Calyptraea lamellosa G.P. Deshayes, 1824
Bostrycapulus latebrus R. Collin, 2005
Crucibulum lawrencei (FOSSIL) Ward & B.W. Blackwelder,1987 †
Crepidula lessonii (W.J. Broderip, 1834)
Calyptraea lichen W.J. Broderip, 1834
Crucibulum lignarium (W.J. Broderip, 1834)