Type species: Brettia pellucida Dyster, 1858
Status in doubt; the single type specimen of the type species is not recognisable (Hayward & Ryland 1998).
This genus includes the species:
Maplestone, 1911 | Oligocene | Australia Victoria | WoRMS 1400383 | |
Busk, 1884 | Recent | North Pacific | WoRMS 471054 | |
Harmer, 1926 | Recent | Indonesia | WoRMS 471052 | |
Dyster, 1858 | Recent | British Isles | WoRMS 471053 | |
Waters, 1913 | Recent | West Indian Ocean Tanzania | WoRMS 986607 |