Paraphragmites ascoceroides (FOSSIL) Flower, 1943 † Canada, Nova Scotia
Gaspocyrtoceras clarksoni (FOSSIL) Holland, 2000 †
Calocyrtoceras cognatum (FOSSIL) (Barrande, 1865 †) Czech Republic, Bohemia
Lyecoceras columnare (FOSSIL) (Marklin, 1857 †) Sweden, Gotland
Cyrtocycloceras urbanum (FOSSIL) (Barrande, 1866 †) Czech Republic, Bohemia