Tonicella insignis (L.A. Reeve, 1847) Alaska33,5 mm
Plaxiphora integra (Is. Taki, 1953)
Placiphorella isaotakii H. Saito, K. Fujikura& E. Tsuchida, 2008
Boreochiton jakovlevae Sirenko, 2016
Plaxiphora javanica P. Kaas & R.A. Van Belle,1994
Plaxiphora kamehamehae A. Ferreira& H.W. Bertsch, 1979 Hawaii
Mopalia kennerleyi P.P. Carpenter, 1864 Alaska, Mitkof Island
Pterygochiton liasinus (FOSSIL) (Eudes-Deslongchamps,1864 †) France, Basse-Normandie
Mopalia lignosa (A.A. Gould, 1846) USA, Washington47 mm
Tonicella lineata (Wood, 1815) USA, Washington31 mm
Mopalia lionota H.A. Pilsbry, 1918 California, Laguna beach
Mopalia lobium S.S. Berry, 1925
Tonicella lokii K.B. Clark, 1999 California, San Francisco
Mopalia lowei H.A. Pilsbry, 1918 California26 mm
Tonicella marmorea (Fabrius, 1780) Hokkaido27,1 mm
Nuttallochiton martiali (A. de Rochebrune, 1889)
Fremblya matthewsi T. Iredale, 1910 South Australia
Fremblya matthewsi tasmanica (E.A. Ashby, 1920) Tasmania
Plaxiphora mercatoris (E.H.J. Leloup, 1936) Easter Island24,2 mm
Mopalia middendorffii (L. von Schrenck, 1861)
Placiphorella mirabilis K.B. Clark, 1994 Mexico, Isla Cedros
Nuttallochiton mirandus (K.H.J. Thiele, 1906 ex E.A. Smith MS) Canada, Quebec, Cap-des-Rosiers
Pterygochiton mirificus (FOSSIL) Fucini, 1912 † Italy, Sicily
Plaxiphora murdochi H.H. Suter, 1905 New Zealand
Mopalia muscosa (A.A. Gould, 1846) Canada, Vancouver Island23 mm
Mopalia muscosa mossy J.E. Gray USA, Washington53 mm
Plaxiphora obscurella S.M. Souverbie, 1866 West Australia, Freemantle12 mm
Plaxiphora obtecta P.P. Carpenter in H.A. Pilsbry, 1893 New Zealand, Auckland60,6 mm
Placiphorella okutanii H. Saito, K. Fujikura& E. Tsuchida, 2008
Amicula orcutti W.H. Dall, 1884
Placiphorella pacifica S.S. Berry, 1919 Aleutian Islands, Buldir Island25 mm
Plaxiphora paeteliana (K.H.J. Thiele)
Plaxiphora parva H.F. Nierstrasz, 1906 South Africa, Natal19,5 mm
Mopalia phorminx S.S. Berry, 1919
Mopalia plumosa P.P. Carpenter in H.A. Pilsbry, 1893