†family Cymatoceratidae Spath 1927 (mollusk)
Parent taxon: Nautilitaceae according to C. Teichert et al. 1964
Sister taxa: Eutrephoceratidae, Hercoglossidae, Nautilidae, Paracenoceratidae, Pseudonautilidae
Subtaxa: Anglonautilus, Cymatoceras, Cymatonautilus, Deltocymatoceras, Epicymatoceras, Eucymatoceras, Heminautilus, Neocymatoceras, Procymatoceras, Syrionautilus
Ecology: nektobenthic carnivore