Mopaliidae Dall, 1889
Placiphorella albitestae Is. Taki, 1954
Placiphorella atlantica (Verrill & S.I. Smith, 1882)
Placiphorella blainvillei (Broderip, 1832)
Placiphorella blainvillii (Broderip in Broderip & Sowerby, 1832)
Placiphorella borealijaponica Saito & Okutani, 1989
Placiphorella borealis Pilsbry, 1893
Placiphorella hanselmani Clark, 1994
Placiphorella isaotakii Saito, Fujikura & Tsuchida, 2008
Placiphorella mirabilis Clark, 1994
Placiphorella okutanii Saito, Fujikura & Tsuchida, 2008
Placiphorella rufa Berry, 1917
Placiphorella stimpsoni (Gould, 1859)
Placiphorella velata Dall, 1879
