Mopaliidae Dall, 1889

Aerilamma Hull, 1925

Amicula Gray, 1840

Boreochiton G.O. Sars, 1878

Diaphoroplax Iredale, 1914

Euplacifora Johnston, 1891

Euplaciphora Dall, 1897

Euplacophora Verrill & Smith, 1882

Euplaxiphora Shuttleworth, 1853

Frembleya Adams, 1867

Fremblya Dall, 1882

Fremblyia Dall, 1878

Guildingia Carpenter, 1882

Hachijomopalia Taki, 1953

Katharina Gray, 1847

Langfordiella Dall, 1925

Maorichiton Iredale, 1914

Mopalia Gray, 1847

Mopaliella Thiele, 1909

Placiphorella Dall, 1879

Placiphorina Kaas & Van Belle, 1993

Placophora Verrill & Smith, 1882

Placophoropsis Pilsbry, 1893

Plaxiphora Gray, 1847

Poneroplax Iredale, 1914

Semimopalia Dall, 1919

Streptochiton Dall, 1879

Symetrogephyrus Paetel, 1888

Symmetrogephyrus Middendorff, 1848

Trochochiton Rochebrune, 1884