Yochelsonospira nauvooensis (FOSSIL) (A.H. Worthen, 1884 †)
Loxoplocus nelsonae (FOSSIL) Peel, 1975 †
Ectomaria nieszkowskii (FOSSIL) (A. Schmidt, 1858 †)
Yochelsonospira northviewensis (FOSSIL) (Weller, 1899 †)
Humiliworthenia nuda (FOSSIL) (E.F.R.K. Koken, 1900 †)
Lophospira obliqua (FOSSIL) Ulrich & Scofield, 1897 †
Kawanamia onimarensis (FOSSIL) T. Kase, 1988 †
Ectomaria orientalis (FOSSIL) (J. Donald, 1906 †)
Worthenia orientalis (FOSSIL) (F.A. Roemer, 1880 †)
Paupospira oweni (FOSSIL) (Ulrich & Scofield,1897 †)
Lophospira ozakii (FOSSIL) Endo, 1935 †
Ectomaria pagoda (FOSSIL) (Salter, 1859 †)
Lophospira pagoda (FOSSIL) Kobayashi, 1930 †
Worthenia pagoda (FOSSIL) Mansuy, 1914 †
Donaldiella pagodai (FOSSIL) (Endo, 1932 †)
Worthenia parvula (FOSSIL) Hoare & al., 1997 †
Lophospira perangulata (FOSSIL) (J.W. Hall, 1847 †)
Proturritella piersalense (FOSSIL) (E.F.R.K. Koken, 1897 †)
Worthenia pilula (FOSSIL) Batten, 1989 †
Worthenia planalveozona (FOSSIL) Batten, 1989 †
Worthenia plutonis (FOSSIL) E.A.L. Kittl, 1894 †
Worthenia praerupta (FOSSIL) Böhm, 1895 †
Batteniella prantli (FOSSIL) Frýda & Manda, 1997 †
Ectomaria prisca (FOSSIL) (Billings, 1859 †)
Lophospira producta (FOSSIL) Ulrich & Scofield, 1897 †
Arjamannia pteronoides (FOSSIL) (Longst, 1924 †)
Gyronema pulchellum (FOSSIL) Ulrich & Scofield, 1897 †
Longstaffia pulchra (FOSSIL) (F. McCoy, 1844 †)
Eunema quadrisulcata (FOSSIL) Ulrich & Scofield, 1897 †
Lophospira ramsayi (FOSSIL) Harper †
Batteniella rarissima (FOSSIL) (J. Perner, 1907 †)
Lophospira rectistriata (FOSSIL) W.J. Raymond, 1908 †
Worthenia rhombifera (FOSSIL) Korner, 1937 †
Ruedemannia robusta (FOSSIL) (Lindström, 1884 †)
Gyronema rotalineum (FOSSIL) W.J. Raymond, 1906 †