Polymastiidae Gray, 1867
Radiella alvea (Hansen, 1885)
Radiella antarctica Plotkin & Janussen, 2008
Radiella conica (Hansen, 1885)
Radiella hemisphaerica (Sars, 1872)
Radiella irregularis (Ridley & Dendy, 1886)
Radiella sarsi (Ridley & Dendy, 1886)
Radiella sol Schmidt, 1870
Radiella straticularis Wilson, 1925
Radiella straticulata (Wilson, 1925)