Type species: Defrancia cochloidea von Hagenow, 1851
This genus includes the species:
(Gregory, 1909) | Late Cretaceous Coniacian | England also Germany | WoRMS 1410727 | |
(von Hagenow, 1851) | Late Cretaceous Maastrichtian | Netherlands | WoRMS 1410728 | |
Vavra, 1983 | Paleogene Oligocene Rupelian | Austria | WoRMS 1401336 | |
Hillmer, 1971 | Early Cretaceous Hauterivian | Germany | WoRMS 1401337 | |
Gregory, 1909 | Late Cretaceous Maastrichtian | Netherlands | WoRMS 1401338 |