Thomelites robustus (FOSSIL) Kennedy, Cobban, Hancock& Hook 1989 †
Tarrantoceras rotatile (FOSSIL) (Adkins 1928 †)
Calycoceras rubeyi (FOSSIL) Cobban, 1988 †
Metasigaloceras rusticum (FOSSIL) (Sowerby, 1817 †)
Acompsoceras saithense (FOSSIL) (Gueranger) †
Kamerunoceras salmuriensis (FOSSIL) (Courtiller, 1867 †)
Acanthoceras sangalense (FOSSIL) Benavides-Caceres, 1956 †
Gentoniceras sarthacense (FOSSIL) (C.É. Bayle, 1878 †)
Rhamphidoceras saxatilis (FOSSIL) J. Kennedy & Cobban,1990 †
Mantelliceras saxbii (FOSSIL) (Sharpe, 1857 †)
Rhamphidoceras saxitalis (FOSSIL) Cobban & Kennedy, 1990 †
Codazziceras scheibei (FOSSIL) (F. Riedel, 1938 †)
Kamerunoceras schindewolfi (FOSSIL) M. Collignon, 1965 †
Sharpeiceras schlueteri (FOSSIL) A. Hyatt, 1903 †
Nigericeras scotti (FOSSIL) Cobban, 1972 †
Acanthoceras seitzi (FOSSIL) F. Riedel, 1932 †
Tarrantoceras sellardsi (FOSSIL) (Adkins, 1928 †)
Euomphaloceras septemseriatum (FOSSIL) (Cragin, 1893 †)
Thomelites serotinus (FOSSIL) (Wright & Kennedy,1981 †)
Buchiceras slizewiczi (FOSSIL) Fallot 1885 †
Kastanoceras spiniger (FOSSIL) J. Kennedy & Cobban,1990 †
Tarrantoceras stantoni (FOSSIL) (Adkins 1928 †)
Paramammites subconciliatus (FOSSIL) (Choffat, 1898 †)
Morrowites subdepressus (FOSSIL) Cobban & Hook, 1983 †
Gentoniceras subgentoni (FOSSIL) (Spath, 1926 †)
Metoicoceras swallovi (FOSSIL) (Shumard, 1859 †)
Conlinoceras tarrantense (FOSSIL) (Adkins, 1928 †)
Pseudaspidoceras tassaraensis (FOSSIL) Meister & al., 1992 †
Jeanrogericeras tavense (FOSSIL) (Faraud, 1940 †)
Protacanthoceras tegulicium (FOSSIL) Wright & Kennedy, 1980 †
Eucalycoceras templetonense (FOSSIL) Cobban, 1988 †
Thomelites tenereensis (FOSSIL) Meister & al., 1994 †
Acompsoceras tenue (FOSSIL) M. Collignon, 1964 †
Microsulcatoceras texanum (FOSSIL) J. Kennedy & Cobban,1990 †
Watinoceras thompsonense (FOSSIL) Cobban, 1988 †