Chebbioceras erfoudense (FOSSIL) Klug & al., 2008 † Morocco, Tafilalet
Orthoceras etheridgei (FOSSIL) Blake † UK, Scotland
Orthoceras eutrichum (FOSSIL) Whidborne † UK, Devon
Orthoceras evanescens (FOSSIL) Barrande, 1866 † Czech Republic, Bohemia
Orthoceras exoticum (FOSSIL) Barrande, 1866 †
Orthoceras expansum (FOSSIL) C.H. Blake, 1882 † Northern Ireland
Theoceras filondouzense (FOSSIL) Kröger, 2008 †
Pojetoceras floweri (FOSSIL) M.A. Frey, 1995 † USA, Kentucky, Jessamine
Orthoceras fluctuatum (FOSSIL) Salter † UK, Wales
Orthoceras fluminense (FOSSIL) (Meneghini, 1857 †) Morocco, Tafilalet
Striatocycloceras foerstei (FOSSIL) (Teichert, 1930 †) Estonia, Lääne
Orthoceras ganimedes (FOSSIL) Barrande, 1866 † Czech Republic, Bohemia
Orthoceras geinitzi (FOSSIL) d'Orbigny, 1850 †
Ogygoceras gracile (FOSSIL) Ulrich & al., 1944 † Arkansas, Lawrence County
Orthoceras gradatum (FOSSIL) C. Gemmellaro, 1889 † Italy, Sicily, Palermo
Orthoceras grindrodi (FOSSIL) Blake, 1882 † UK, England, Herefordshire
Orthoceras hulli (FOSSIL) C. Gemmellaro, 1889 † Italy, Sicily, Palermo
Orthoceras hungaricum (FOSSIL) Blake † UK, Wales
Striatocycloceras isbergi (FOSSIL) Kröger, 2013 † Estonia, Hiiu, Pühalepa
Kopaninoceras jucundum (FOSSIL) (Barrande, 1870 †) Italy, Sardinia Island
Orthoceras kawasakii (FOSSIL) T. Kobayashi, 1928 † South Korea
Palorthoceras kayseri (FOSSIL) Kröger & al., 2007 † Argentina, San Juan, Ullum
Infundibuloceras komiense (FOSSIL) (P.A. Zhuravleva, 1978 †)
Orthoceras lambi (FOSSIL) J.J.F. Whiteaves † Minnesota
Trematoceras lateseptatum (FOSSIL) (J. Von Hauer, 1846 †) Austria, Oberösterreich, Gmunden
Orthoceras latissimum (FOSSIL) Portlock † Ireland
Orthoceras lentum (FOSSIL) Ruedemann, 1906 † USA, New York, Clinton
Orthoceras lepton (FOSSIL) C. Gemmellaro, 1889 † Italy, Sicily, Palermo
Orthoceras lesueuri (FOSSIL) A.H. Clarke, 1897 † Minnesota
Infundibuloceras longicameratum (FOSSIL) Kröger, 2008 † Morocco, Tafilalet
Orthoceras luhai (FOSSIL) Stumbur, 1956 †
Infundibuloceras mira (FOSSIL) (P.A. Zhuravleva, 1978 †)
Orthoceras modestum (FOSSIL) Ruedemann, 1906 † USA, New York, Clinton
Infundibuloceras mohamadi (FOSSIL) Kröger, 2008 †
Orthoceras nakamurai (FOSSIL) T. Kobayashi, 1927 † South Korea