Eutrephoceras quadrilineatum (FOSSIL) (J. Favre, 1869 †)
Eutrephoceras reesidei (FOSSIL) H.B. Stenzel, 1940 †
Euciphoceras regale (FOSSIL) (Sowerby, 1823 †)
Nautilus reticulatus J. Von Hauer, 1846
Paracymatoceras rota (FOSSIL) (Blanford, 1861 †)
Eutrephoceras rotundum (FOSSIL) Crick, 1898 †
Paracymatoceras rufum (FOSSIL) Alsen, 2006 †
Allonautilus scrobiculatus Ward & F.L. Saunders,1997
Nautilus scrobiculatus D.C. Solander, 1786
Stenzeloceras sinuosum (FOSSIL) Whetstone & Teichert,1978 †
Eutrephoceras sloani (FOSSIL) Reeside, 1924 †
Eutrephoceras soyaense (FOSSIL) E. Matsumoto& S. Miyauchi, 1983 †
Eutrephoceras spengleri (FOSSIL) Wiedmann, 1960 †
Eutrephoceras sphaericum (FOSSIL) (E. Forbes, 1846 †)
Nautilus sphaericus (FOSSIL) E. Forbes, 1846 †
Kummelonautilus splendens (FOSSIL) (Blanford, 1861 †)
Nautilus stenomphalus Sowerby, 1849
Eutrephoceras stephensoni (FOSSIL) R.E. Dickerson, 1914 †
Nautilus sternbergi Barrande, 1865
Nautilus striatus (FOSSIL) Sowerby, 1817 †
Nautilus stromeri Loesch, 1914
Eutrephoceras subfleuriausianum (FOSSIL) (d'Archiac, 1850 †)
Eutrephoceras sublaevigatum (FOSSIL) (A.V.M.D. D'Orbigny,1850 †)
Eutrephoceras subrotundum (FOSSIL) Crick, 1898 †
Belmonticeras subsinuatum (FOSSIL) (A.V.M.D. D'Orbigny,1850 †)
Pseudocenoceras supervacuum (FOSSIL) Shimansky, 1975 †
Eutrephoceras tawaense (FOSSIL) Furuichi, 1982 †
Eutrephoceras traubi (FOSSIL) Schultz, 1976 †
Nautilus triangularis (FOSSIL) P.D. Montfort, 1802 †
Paracymatoceras tunghaicum (FOSSIL) E. Matsumoto & K. Amano,1964 †
Nautilus tyrannus Barrande, 1865
Eutrephoceras umbilicare (FOSSIL) (G.P. Deshayes, 1835 †)
Eutrephoceras urbanum (FOSSIL) (Sowerby, 1843 †)
Eutrephoceras uzense (FOSSIL) Shimansky, 1975 †
Eutrephoceras vastum (FOSSIL) (Kner, 1850 †)