Cyrtogomphoceras angustisiphonatum (FOSSIL) Miller †
Cyrtogomphoceras baffinense (FOSSIL) Foerste, 1928 †
Ulrichoceras beloitense (FOSSIL) Foerste, 1928 †
Cyrtogomphoceras contractum (FOSSIL) Foerste, 1935 †
Cyrtogomphoceras curvatum (FOSSIL) Troedsson, 1929 †
Cyrtogomphoceras dowlingi (FOSSIL) (Foerste, 1928 †)
Cyrtogomphoceras foerstei (FOSSIL) Miller & Furnish, 1937 †
Kiaeroceras frognoyense (FOSSIL) E. Strand, 1934 †
Cyrtogomphoceras furnishi (FOSSIL) Roy, 1941 †
Kiaeroceras heroyense (FOSSIL) E. Strand, 1934 †
Cyrtogomphoceras intermedium (FOSSIL) (J.J.F. Whiteaves,1897 †)
Cyrtogomphoceras landerense (FOSSIL) Foerste, 1935 †
Cyrtogomphoceras magnum (FOSSIL) (J.J.F. Whiteaves,1890 †)
Cyrtogomphoceras milleri (FOSSIL) (Roy, 1941 †)
Cyrtogomphoceras minor (FOSSIL) Foerste, 1935 †
Konglungenoceras norvegicum (FOSSIL) Sweet, 1959 †
Cyrtogomphoceras nutatum (FOSSIL) (Foerste & Savage †)
Strandoceras orvikui (FOSSIL) Kröger, 2007 †
Cyrtogomphoceras perexpansum (FOSSIL) Foerste, 1935 †
Cyrtogomphoceras popoagiense (FOSSIL) Foerste, 1935 †
Landeroceras prolatum (FOSSIL) (Miller, 1932 †)
Cyrtogomphoceras rotundum (FOSSIL) Miller, 1932 †
Cyrtogomphoceras sacculus (FOSSIL) Troedsson, 1929 †
Strandoceras schmidti (FOSSIL) (Teichert, 1930 †)
Cyrtogomphoceras schucherti (FOSSIL) Flower, 1952 †
Cyrtogomphoceras shamattawaense (FOSSIL) Foerste & Savage, 1927 †
Strandoceras sonax (FOSSIL) (Salter, 1858 †)
Strandoceras sphinx (FOSSIL) (A. Schmidt, 1858 †)
Strandoceras strandi (FOSSIL) (Sweet, 1958 †)
Cyrtogomphoceras thompsoni (FOSSIL) Foerste, 1928 †
Cyrtogomphoceras turgidum (FOSSIL) Troedsson, 1929 †
Strandoceras tyriense (FOSSIL) (E. Strand, 1934 †)
Cyrtogomphoceras vicinum (FOSSIL) Foerste, 1935 †
Cyrtogomphoceras whiteavesi (FOSSIL) (S.A. Miller, 1897 †)