Naticopsis spectata (FOSSIL) Reed, 1944 †
Marmolatella stomatia (FOSSIL) (Stoppani, 1858 †)
Marmolatella subovata (FOSSIL) (F.B. Meek& A.H. Worthen, 1873 †)
Naticopsis sumatrensis (FOSSIL) F.A. Roemer, 1880 †
Naticopsis suturicompta (FOSSIL) E.L. Yochelson & Dutro,1960 †
Naticopsis taemasensis (FOSSIL) Tassell, 1982 †
Naticopsis tayloriana (FOSSIL) Girty, 1910 †
Naticopsis telleri (FOSSIL) E.A.L. Kittl, 1892 †
Naticopsis tortum (FOSSIL) (F.B. Meek, 1872 †)
Seisia trachyneritoides (FOSSIL) Yin & E.L. Yochelson,1983 †
Naticopsis transversa (FOSSIL) (Beede, 1907 †)
Naticopsis trautscholdi (FOSSIL) Fliegel, 1901 †
Naticopsis trevorpaticiciorum (FOSSIL) Peel, 1975 †
Naticopsis tschernyschewi (FOSSIL) Yakowlew, 1899 †
Platychilina tuberculata (FOSSIL) E.A.L. Kittl, 1894 †
Naticopsis tumescens (FOSSIL) J. Perner, 1903 †
Naticopsis utahensis (FOSSIL) Batten & A. Stokes,1986 †
Paradelphinulopsis vallieri (FOSSIL) Blodgett & al., 2001 †
Naticopsis variata (FOSSIL) (B. Phillips, 1836 †)
Naticopsis velox (FOSSIL) J. Perner, 1903 †
Naticopsis virgata (FOSSIL) Knight, 1933 †
Naticopsis waageni (FOSSIL) C. Gemmellaro, 1889 †
Naticopsis wakehami (FOSSIL) A.H. Clarke, 1908 †
Naticopsis wakimizui (FOSSIL) I. Hayasaka, 1943 †
Naticopsis waterlooensis (FOSSIL) Weller, 1916 †
Spinidelphinulopsis whaleni (FOSSIL) Blodgett & al., 2001 †
Naticopsis wortheniana (FOSSIL) Knight, 1934 †
Naticopsis yinganensis (FOSSIL) Qiao, 1983 †
Naticopsis ziczac (FOSSIL) R.P. Whitfield, 1882 †