Type species: Defrancia lucernaria Sars, 1851
This genus includes the species:
Brood, 1972 | Paleogene Paleocene Danian | Scandinavia | WoRMS 1404268 | |
Voigt, 1977 | Late Cretaceous Campanian-Maastrichtian | Iran | WoRMS 1404269 | |
(Sars, 1851) | Recent | North Atlantic, Arctic | WoRMS 146824 | |
(Kluge, 1946) | Recent | Arctic | WoRMS 471007 |