Seymourites abruptus (FOSSIL) McLearn, 1929 † Galapagos
Spinikosmoceras aculeatum (FOSSIL) (K.E.I. von Eichwald,1893 †) Switzerland, Aargau
Spinikosmoceras acutistriatum (FOSSIL) Robson † UK, England, Wiltshire
Gulielmiceras alaskanum (FOSSIL) Imlay, 1953 † Galapagos
Seymourites alticostatus (FOSSIL) Imlay, 1953 † Galapagos
Kosmoceras bigoti (FOSSIL) R. Douvillé, 1915 † France, Loire
Sigaloceras calloviense (FOSSIL) (J. de C. Sowerby,1815 †) France, Basse-Normandie, Orne
Kosmoceras castor (FOSSIL) Reinecke, 1818 † Russia, Ryazan32 mm
Kosmoceras castor bizeti (FOSSIL) J.H.F. Douvillé, 1915 † France, Loire
Kepplerites curtilobus (FOSSIL) (Buckman, 1922 †) UK, England70 mm
Kosmoceras duncani (FOSSIL) Sowerby, 1816 † France, Loire
Kosmoceras effulgens (FOSSIL) (Buckman) † UK, England
Kepplerites enodatum (FOSSIL) (Nikitin, 1881 †) Switzerland, Aargau
Kosmoceras fibuliferum (FOSSIL) (Buckman, 1924 †) UK, England, Wiltshire
Kepplerites galilaei (FOSSIL) (Buckman, 1922 †) UK, England, Wiltshire
Kosmoceras gemmatum (FOSSIL) B. Phillips, 1835 † Germany, Bayern34 mm
Seymourites gitinsi (FOSSIL) McLearn, 1927 †
Kepplerites gowerianus (FOSSIL) (Sowerby 1827 †) France, Champagne-Ardenne, Ardennes
Seymourites ingrahami (FOSSIL) McLearn, 1929 † Galapagos
Gulielmiceras jason (FOSSIL) (Reinecke, 1818 †) France, Loire111 mm
Kepplerites keppleri (FOSSIL) (Oppel, 1862 †) Azerbaijan, Shaki-Zaqatala
Kosmoceras lithuanicum (FOSSIL) (Siemiradski, 1864 †) Lithuania, Klaipedos24 mm
Seymourites mcevoyi (FOSSIL) McLearn, 1928 † Galapagos
Seymourites multus (FOSSIL) McLearn, 1929 † Galapagos
Zugokosmoceras obductum (FOSSIL) Buckman, 1925 † France, Loire52 mm
Kosmoceras ornatum (FOSSIL) Schlotheim, 1820 † France, Basse-Normandie, Calvados76 mm
Kosmoceras phaeinum (FOSSIL) (Buckman, 1924 †)
Catasigaloceras planicerclus (FOSSIL) (Buckman †)
Seymourites plenus (FOSSIL) McLearn, 1927 † USA, Alaska, Kodiak Island
Kosmoceras proniae (FOSSIL) (Teysserre 1883 †)
Gowericeras snugharborense (FOSSIL) Imlay, 1953 † USA, Alaska, Kenai Peninsula
Kosmoceras spiculatum (FOSSIL) (Buckman, 1924 †) England, London
Gowericeras spinosum (FOSSIL) Imlay, 1953 † USA, Montana
Kosmoceras spinosum (FOSSIL) Sowerby, 1826 † Switzerland, Aargau
Kosmoceras spoliatum (FOSSIL) F.A. von Quenstedt,1858 † Switzerland, Aargau