Schizopea abrupta (FOSSIL) Ulrich & al., 1931 †
Sinuopea advena (FOSSIL) (Winchell, 1864 †)
Euconia amphitrite (FOSSIL) (Billings, 1865 †)
Sinuopea basiplanata (FOSSIL) Ulrich & al., 1931 †
Sinuopea cingulata (FOSSIL) Ulrich & al., 1931 †
Euconia conica (FOSSIL) J. Heller, 1954 †
Sellinema dives (FOSSIL) J. Perner, 1903 †
Schizopea dubia (FOSSIL) Ulrich & al., 1931 †
Schizopea elevata (FOSSIL) Ulrich & al., 1931 †
Sinuopea eminencensis (FOSSIL) (Ulrich & Bridge, 1931 †)
Sinuopea emminencis (FOSSIL) Ulrich & al., 1931 †
Euconia etna (FOSSIL) (Billings, 1865 †)
Sellinema frater (FOSSIL) J. Perner, 1903 †
Schizopea grandis (FOSSIL) Ulrich & al., 1931 †
Sinuopea humerosa (FOSSIL) Butts, 1926 †
Sinuopea humilis (FOSSIL) Butts, 1926 †
Sinuopea leiosomella (FOSSIL) (Sardeson 1896 †)
Euconia mosheimensis (FOSSIL) Butts, 1926 †
Umbospira nigricans (FOSSIL) J. Perner, 1903 †
Schizopea normalis (FOSSIL) Ulrich & al., 1931 †
Sinuopea obesa (FOSSIL) Butts, 1926 †
Sellinema obtusa (FOSSIL) (J.J.F. Whiteaves,1892 †)
Horiostomella otiosa (FOSSIL) J. Perner, 1903 †
Sinuopea parva (FOSSIL) (Cleland, 1900 †)
Euconia pervetusta (FOSSIL) (T.A. Conrad, 1838 †)
Schizopea primordialis (FOSSIL) (Winchell, 1864 †)
Euconia ramseyi (FOSSIL) (Billings, 1859 †)
Euconia sinuata (FOSSIL) Flower, 1968 †
Naticasinus sinus (FOSSIL) Pan & Erwin, 2002 †
Sinuopea stclairi (FOSSIL) Ulrich & al., 1931 †
Schizopea subrotunda (FOSSIL) Ulrich & al., 1931 †
Sinuopea sweeti (FOSSIL) (R.P. Whitfield, 1882 †)
Euconia thule (FOSSIL) (Salter) †
Schizopea transitans (FOSSIL) Ulrich & al., 1931 †
Schizopea typica (FOSSIL) Ulrich & al., 1931 †