Proclydonautilus anianiensis (FOSSIL) (Shimansky, 1957 †)
Cosmonautilus dilleri (FOSSIL) A. Hyatt & Smith, 1905 †
Proclydonautilus gasteroptychus (FOSSIL) (Dittmar, 1866 †)
Proclydonautilus goniatites (FOSSIL) (J. Von Hauer, 1849 †)
Proclydonautilus griesbachi (FOSSIL) (Mojsisovics †)
Cosmonautilus hersheyi (FOSSIL) Smith, 1927 †
Proclydonautilus hessi (FOSSIL) Smith, 1927 †
Proclydonautilus kiparisovae (FOSSIL) A.M. Popov, 1939 †
Proclydonautilus natosini (FOSSIL) McLearn, 1946 †
Clydonautilus noricus (FOSSIL) (Mojsisovics, 1873 †)
Proclydonautilus okhotensis (FOSSIL) E.S. Sobolev, 1998 †
Cosmonautilus pacificus (FOSSIL) Smith, 1927 †
Cosmonautilus polaris (FOSSIL) E.S. Sobolev, 1989 †
Proclydonautilus pseudoseimkanensis (FOSSIL) E.S. Sobolev, 1989 †
Clydonautilus quenstedti (FOSSIL) (J. Von Hauer, 1849 †)
Clydonautilus salisburgensis (FOSSIL) (J. Von Hauer, 1849 †)
Styrionautilus sauperi (FOSSIL) (Haueri, 1846 †)
Proclydonautilus seimkanensis (FOSSIL) Bychkov, 1976 †
Cosmonautilus shastensis (FOSSIL) Smith, 1927 †
Proclydonautilus sinekensis (FOSSIL) A.M. Popov, 1989 †
Proclydonautilus spirolobus (FOSSIL) (Dittmar, 1866 †)
Proclydonautilus squawensis (FOSSIL) Kummel, 1953 †
Proclydonautilus stantoni (FOSSIL) Smith, 1927 †
Styrionautilus styriacus (FOSSIL) (Mojsisovics, 1873 †)
Proclydonautilus triadicus (FOSSIL) (Mojsisovics, 1873 †)
Proclydonautilus ursensis (FOSSIL) Smith, 1927 †