Joculator gorini A. Cecalupo & I. Perugia,2014
Dizoniopsis gothica M. Jay & J. Drivas, 2002
Joculator goubini Cecalupo & Perugia, 2017
Joculator gracilis C.F. Laseron, 1951
Joculator granatus (E.A. Kay, 1979)
Marshallopsis granosa A. Cecalupo & I. Perugia,2012
Joculator granulosus A. Cecalupo & I. Perugia,2013
Synthopsis gratiosa A. Cecalupo & I. Perugia,2012
Cerithiopsis greenii (Adams, 1839)
Horologica gregaria A. Cecalupo & I. Perugia,2012
Socienna gregaria (C.F. Laseron, 1951)
Cerithiopsis greggiensis (FOSSIL) T.H. Aldrich, 1911 †
Cerithiopsis greppii G. Buzzurro & A. Cecalupo,2005
Cerithiopsis grippi P. Bartsch, 1917
Cerithiopsis guanacastensis L.G. Hertlein & A.M. Strong,1951
Cerithiopsis guaraniana (A.V.M.D. D'Orbigny,1841)
Cerithiopsis guatulcoensis L.G. Hertlein & A.M. Strong,1951
Krachia guernei (P. Dautzenberg& H. Fischer, 1896)
Cerithiopsis guitarti J. Espinosa & J.A. Ortea,2001
Horologica gwenaellae A. Cecalupo & I. Perugia,2013
Horologica gypsata A. Cecalupo & I. Perugia,2012
Joculator hadfieldae Cecalupo & Perugia, 2017
Synthopsis hadfieldi (M. Jay & J. Drivas,2002)
Cerithiopsis halia P. Bartsch, 1911
Paraseila hallagani (C. Hedley, 1905)
Cerithiopsis hauniensis (FOSSIL) J.P.J. Ravn, 1939 †
Socienna hebes (C.F. Laseron, 1951)
Mendax hebetatus B.A. Marshall, 1978
Cerithiopsis hedista J.C. Melvill & R. Standen,1896
Joculator hedleyi C.F. Laseron, 1951
Dizoniopsis herberti M. Jay & J. Drivas, 2002
Cerithiopsis hero P. Bartsch, 1911
Paraseila heronensis C.F. Laseron, 1951
Dizoniopsis herosae M. Jay & J. Drivas, 2002
Joculator herosae A. Cecalupo & I. Perugia,2012