Algericeras proratum (FOSSIL) (Coquand, 1879 †)
Boeseites proteus (FOSSIL) (F. Haas, 1942 †)
Falloticeras proteus (FOSSIL) (A.V.M.D. D'Orbigny,1842 †)
Dipoloceras pseudaon (FOSSIL) Spath, 1931 †
Hysteroceras pseudocornutum (FOSSIL) Spath, 1934 †
Neokentroceras pseudovaricosum (FOSSIL) Spath, 1922 †
Eubrancoceras quenstedti (FOSSIL) Knechtel, 1947 †
Mortoniceras recticostatum (FOSSIL) Spath, 1925 †
Hysteroceras recuperator (FOSSIL) Van Hoepen, 1944 †
Sakondryella remolinense (FOSSIL) Böse, 1928 †
Dipoloceroides remotum (FOSSIL) (Spath, 1931 †)
Brancoceras retrorsum (FOSSIL) M. Collignon, 1949 †
Prohysteroceras richardsi (FOSSIL) Whitehouse, 1926 †
Mortoniceratoides rigidum (FOSSIL) (Spath, 1933 †)
Erioliceras robustum (FOSSIL) (Van Hoepen 1955 †)
Oxytropidoceras roissyanus (FOSSIL) (A.V.M.D. D'Orbigny,1841 †)
Boeseites romeri (FOSSIL) F. Haas, 1942 †
Subschloenbachia rostratum (FOSSIL) (Sowerby, 1817 †)
Parabrancoceras rotundatum (FOSSIL) (M. Collignon, 1949 †)
Dipoloceroides semicornutum (FOSSIL) (Spath, 1931 †)
Hysteroceras semileve (FOSSIL) F. Haas, 1942 †
Brancoceras senequieri (FOSSIL) (A.V.M.D. D'Orbigny,1841 †)
Mortoniceras sergipensis (FOSSIL) (White 1887 †)
Hysteroceras serpentinum (FOSSIL) Spath, 1934 †
Craginites serratescens (FOSSIL) (Cragin †)
Euhystrichoceras simplex (FOSSIL) Spath, 1933 †
Hysteroceras simplicicosta (FOSSIL) Spath, 1934 †
Neokentroceras singulare (FOSSIL) F. Haas, 1942 †
Elobiceras spathianum (FOSSIL) F. Haas, 1942 †
Neokentroceras speciosum (FOSSIL) F. Haas, 1942 †
Cantabrigites spinosum (FOSSIL) (Pervinquière, 1907 †)
Dipoloceroides spinulosum (FOSSIL) (Spath, 1931 †)
Mortoniceras stoliczkai (FOSSIL) Spath 1922 †
Butticeras studleyi (FOSSIL) Anderson, 1958 †
Hysteroceras subbinum (FOSSIL) Spath, 1934 †