Orthoceras striatulum (FOSSIL) (J. de C. Sowerby) †
Trematoceras styriacum (FOSSIL) (Mojsisovics, 1873 †)
Trematoceras subcampanile (FOSSIL) Kiparisova, 1954 †
Orthoceras subimbricatum (FOSSIL) Portlock †
Orthoceras submoniliforme (FOSSIL) Meneghini, 1857 †
Orthoceras subtriangulare (FOSSIL) C. Gemmellaro, 1889 †
Orthocycloceras tafilaltense (FOSSIL) Kröger, 2008 †
Orthoceras tenui (FOSSIL) McCoy †
Kopaninoceras thyrsus (FOSSIL) (Barrande, 1870 †)
Tibichoanoceras tibichoanum (FOSSIL) Kröger, 2008 †
Trematoceras triadicum (FOSSIL) (Mojsisovics, 1873 †)
Orthoceras undulocinctum (FOSSIL) Blake †
Striatocycloceras undulostriatum (FOSSIL) (J.W. Hall, 1847 †)
Orthoceras vagum (FOSSIL) Ruedemann, 1906 †
Orthoceras vesiculosum (FOSSIL) de Koninck, 1863 †
Orthoceras vicarii (FOSSIL) Whidborne †
Orthoceras vicarii eductum (FOSSIL) Whidborne †
Orthoceras waageni (FOSSIL) C. Gemmellaro, 1889 †