Nudibranchia Blainville, 1814
Caloplocamus
Kaloplocamus Bergh, 1892
Placamoceres Paetel, 1875
Placamoceros Gray, 1847
Placamorpherus O'Donoghue, 1929
Plocameros Griffith, 1834
Plocamocera Desmarest, 1859
Plocamoceras d'Orbigny, 1841
Plocamocerus Dujardin, 1847
