Boiotremus longitudinalis (FOSSIL) (Lindström, 1884 †)
Bucania lyelli (FOSSIL) J.W. Hall 1847 †
Kokenospira maccullochi (FOSSIL) Reed, 1921 †
Salpingostoma macera (FOSSIL) E.F.R.K. Koken& J. Perner, 1925 †
Salpingostoma macrostomoides (FOSSIL) Spriestersbach, 1925 †
Megalomphala marjorae (FOSSIL) Peel, 1991 †
Salpingostoma martinssoni (FOSSIL) Peel, 1991 †
Salpingostoma megalostoma (FOSSIL) (d''Eichwald, 1840 †)
Bucania minganensis (FOSSIL) Twenhofel, 1938 †
Bucania minnesotensis (FOSSIL) Ulrich & Scofield, 1897 †
Tremanotus minutus (FOSSIL) Northrop, 1939 †
Bucania mudanensis (FOSSIL) Kobayashi, 1937 †
Kokenospira mullochensis (FOSSIL) Reed, 1921 †
Phragmolites multinotatus (FOSSIL) Bradley, 1930 †
Salpingostoma multirugatum (FOSSIL) (Reed, 1921 †)
Loxobucania nashvillensis (FOSSIL) (Ulrich & Scofield,1897 †)
Tremanotus nautiloidea (FOSSIL) J. Perner, 1903 †
Kokenospira nicholsoni (FOSSIL) Reed, 1921 †
Phragmolites obliquus (FOSSIL) Ulrich & Scofield, 1897 †
Bucania oelandica (FOSSIL) E.F.R.K. Koken, 1896 †
Salpingostoma orientalis (FOSSIL) Twenhofel, 1928 †
Patellostium ourayensis (FOSSIL) (Gurley, 1884 †)
Phragmolites pannosus (FOSSIL) Billings, 1866 †
Tremanotus parvus (FOSSIL) Spitz, 1907 †
Bucania peracuta (FOSSIL) Ulrich & Scofield, 1897 †
Tremanotus pervoluta (FOSSIL) (McChesney, 1861 †)
Phragmolites phaecus (FOSSIL) Öpik, 1953 †
Bucania pilula (FOSSIL) Lindström, 1884 †
Megalomphala pinguis (FOSSIL) (E.F.R.K. Koken& J. Perner, 1925 †)
Megalomphala planorbiformis (FOSSIL) E.F.R.K. Koken, 1897 †
Tremanotus planorbis (FOSSIL) J. Perner, 1903 †
Bucania playfairi (FOSSIL) Reed, 1921 †
Bucania pojetai (FOSSIL) Wahlman, 1992 †
Goniotremus polygonus (FOSSIL) (J. Perner, 1903 †)
Tremanotus portlocki (FOSSIL) Reed, 1921 †