Antimargarita Powell, 1951 (original description)
Antitrichotropis Powell, 1951 accepted as Torellia Jeffreys, 1867 (original description)
Belalora Powell, 1951 (original description)
Belaturricula Powell, 1951 (original description)
Colpospirella Powell, 1951 accepted as Turritella Lamarck, 1799 (original description)
Conorbela Powell, 1951 (original description)
Corneolitorina Powell, 1951 accepted as Laevilitorina Pfeffer, 1886 (original description)
Discotrichoconcha Powell, 1951 (original description)
Errinopsis Broch, 1951 (original description)
Falsilunatia Powell, 1951 (original description)
Falsimargarita Powell, 1951 (original description)
Falsimohnia Powell, 1951 (original description)
Fuegotrophon Powell, 1951 (original description)
Kerguelenatica Powell, 1951 (original description)
Laevilacunaria Powell, 1951 (original description)
Leptocollonia Powell, 1951 (original description)
Lorabela Powell, 1951 (original description)
Parvaplustrum Powell, 1951 (original description)
Pellilacunella Powell, 1951 accepted as Laevilitorina Pfeffer, 1886 (original description)
Photinastoma Powell, 1951 (original description)
Stramonitrophon Powell, 1951 accepted as Trophon Montfort, 1810 (original description)
Xymenopsis Powell, 1951 (original description)