Mysella putealis (FOSSIL) C.R. Laws, 1950 †
Lasaeoneaera radiata (FOSSIL) (G.P. Deshayes, 1924 †)
Thecodonta rainesi M. Huber, 2012
Axinodon redondoensis (T.A. Burch, 1941)
Kurtiella regueroae P.H. Valentich-Scott,2012
Tellimya reinga (M.A. Crozier, 1966)
Fronsella reversa C.F. Laseron, 1956
Callomysia revimentalis (J.C. Melvill & R. Standen,1907)
Mysella rochebrunei (W.H. Dall, 1908)
Callomysia sagamiensis (J.T. Kuroda & T. Habe,1971)
Tellimya sallomancensis (FOSSIL) (Cossmann & Peyrot 1911) †,
Montacuta schafferi (FOSSIL) F. Kautsky, 1940 †
Mysella sculpta T. Soot-Ryen, 1957
Planktomya secunda (FOSSIL) (Monterosato in Sacco 1901) †,
Montacuta semiradiata R. Tate, 1889
Montacuta semiradiata neozelanica (R.K. Dell, 1956)
Tellimya semirubra (A. Gaglini, 1992)
Curvemysella semperi (FOSSIL) (Jenkins 1863) †
Devonia semperi (K. Oshima, 1930)
Montacuta sericea (FOSSIL) R. Tate, 1887 †
Koreamya setouchiensis Y. Goto, H. Ishikawa& Y. Hamamura, 2014
Curvemysella sibogai (B. Prashad, 1932)
Thecodonta sieboldi A. Adams, 1864
Nipponomysella siliqua (K.H. Barnard, 1964)
Planktomya sinensis (F.S. Xu & X.Z. Li, 2000)
Barrimysia siphonasomae B.S. Morton & P.H. Scott,1989
Fronsella sipunculicola T. Habe & T. Kanazawa,1981
Montacuta spitzbergensis N.M. Knipowitsch, 1901
Brachiomya stigmatica (H.A. Pilsbry, 1921)
Mysella striatula (A.E. Verrill & K.J. Bush,1898)
Montacutona subelliptica (FOSSIL) (M. Yokoyama, 1924 †)
Kurtiella sublaevis (Carpenter, 1857)
Mysella subquadrata (J.P.L. Pelseneer, 1903)
Montacuta substriata (Montague, 1808)
Montacuta subtriangularis E.A. Smith, 1890