Seimkanites aculeatus (FOSSIL) (Bychkov, 1976 †) Russia, Yana-Okhotsk basin
Asklepioceras altilis (FOSSIL) Tozer, 1994 † Canada, British Columbia, Northern Rockies
Eoprotrachyceras americanum (FOSSIL) (Mojsisovics, 1882 †) United States, Nevada, Pershing
Anolcites anguinus (FOSSIL) Tozer, 1994 † Canada, British Columbia
Anolcites angustus (FOSSIL) Tozer, 1994 † Canada, British Columbia
Sympolycyclus antiquus (FOSSIL) Tozer, 1994 † Canada, British Columbia, Northern Rockies
Trachyceras aon (FOSSIL) (Münster, 1834 †) China, Guizhou, Anshun
Trachyceras aonoides (FOSSIL) Mojsisovics, 1882 † Canada, British Columbia, Peace River
Frankites apertus (FOSSIL) (Mojsisovics, 1893 †) Italy, Trentino-Alto Adige
Protrachyceras archelaus (FOSSIL) (Laube †) Italy, Bolzano
Neoprotrachyceras attila (FOSSIL) (Mojsisovics, 1893 †) Turkey, Isparta, Aksu
Otoarpadites auritus (FOSSIL) Tozer, 1994 † Canada, British Columbia, Northern Rockies
Pterosirenites auritus (FOSSIL) Tozer, 1980 † Canada, British Columbia, Northern Rockies
Meginoceras aylardi (FOSSIL) McLearn, 1947 † Canada, British Columbia, Peace River
Neoprotrachyceras baconicum (FOSSIL) (Mojsisovics, 1870 †) Turkey, Isparta, Aksu
Silenticeras bamberi (FOSSIL) Tozer, 1994 † Canada, British Columbia, Peace River
Anolcites barberi (FOSSIL) Smith, 1914 † USA, Nevada, Pershing
Zestoceras barwicki (FOSSIL) (Johnson, 1941 †) Italy, Veneto, Belluno
Sirenites betulinus (FOSSIL) (Dittmar, 1886 †) Ukraine, Crimea, Simferopol's'kyi
Trachyceras bipunctatum (FOSSIL) (Münster, 1841 †) Italy, Veneto, Belluno
Anasirenites briseis (FOSSIL) Mojsisovics, 1893 † Nepal, West, Dhaualagiri
Brotheotrachyceras brotheus (FOSSIL) (Münster, 1834 †) Italy, Trentino-Alto Adige, Bolzano
Pseudosirenites bullatus (FOSSIL) Tozer, 1994 † Canada, British Columbia, Peace River
Daxatina canadensis (FOSSIL) (J.J.F. Whiteaves,1889 †) Canada, British Columbia, Northern Rockies
Trachyceras canadensis (FOSSIL) (Laube 1869 †)
Arctosirenites canadensis (FOSSIL) Tozer, 1961 † Russia, Yana-Okhotsk basin
Meginoceras caurinum (FOSSIL) McLearn, 1947 † Canada, British Columbia, Peace River
Arctosirenites columbianus (FOSSIL) Tozer, 1994 † Canada, British Columbia, Northern Rockies
Arctoarpadites costatus (FOSSIL) (Tozer, 1961 †) Canada, Axel Heiberg Island
Protrachyceras costulatum (FOSSIL) Mansuy, 1912 † China, Guizhou, Anshun
Anasirenites crassicrenulatus (FOSSIL) Lukeneder & Lukeneder,2014 † Turkey, Isparta, Aksu
Eoprotrachyceras curionii (FOSSIL) (Mojsisovics, 1882 †) Italy, Lombardia, Brescia
Muensterites delicatulus (FOSSIL) McLearn, 1947 † Canada, British Columbia, Northern Rockies
Protrachyceras deprati (FOSSIL) Mansuy, 1912 † China, Guizhou, Anshun
Trachyceras desatoyense (FOSSIL) Johnston, 1941 † Canada, British Columbia, Peace River