Glycymeris sloani (FOSSIL) Ward & B.W. Blackwelder,1987 †
Glycymeris slodkewitschi (FOSSIL) V.N. Sinelnikova, 1984 †
Glycymeris snatolensis (FOSSIL) Slodkewitsch, 1938 †
Tucetona sordida (R. Tate, 1891)
Glycymeris soriensis (FOSSIL) F.E. Eames, 1951 †
Glycymeris spectralis D. Nicol, 1952
Glycymeris spurca L.A. Reeve, 1843
Glycymeris staminea (FOSSIL) T.A. Conrad, 1833 †
Glycymeris stellata (J.G. Bruguière, 1789)
Glycymeris stellata vovan É. Lamy, 1912
Glycymeris striatoundata A. Matsukuma, 1984
Glycymeris striatularis (J.B.P.A. Lamarck, 1819)
Tucetona strigilata (G.B. I Sowerby, 1833)
Tucetona strigilata canoa H.A. Pilsbry & A.A. Olsson,1941
Tucetona strigillata (FOSSIL) (Sowerby, 1833 †)
Glycymeris subauriculatus E. Forbes, 1846
Glycymerita subglobosa (FOSSIL) (H.H. Suter, 1917 †)
Glycymerita sublaevis (FOSSIL) (j. de C. Sowerby) †
Glycymeris sublenticularis (FOSSIL) J.P.J. Ravn, 1933 †
Costaglycymeris subovata (FOSSIL) (T. Say, 1824 †)
Tucetona subpectiniformis (S. Nomura & N. Zinbo,1934)
Tucetona subtilis D. Nicol, 1956
Glycymeris subtrigonalis (FOSSIL) R. Tate, 1886 †
Glycymeris suwannensis (FOSSIL) W.C. Mansfield, 1937 †
Glycymeris swartsi (FOSSIL) L.G. Hertlein, 1927 †
Glycymeris taverai (FOSSIL) D. Frassinetti& Covacevich, 1984 †
Glycymeris taylori (G.F. Angas, 1879)
Tucetona tegulicia (J.C. Melvill, 1898)
Glycymeris tellinaeformis (L.A. Reeve, 1843)
Glycymeris tenuicostata (L.A. Reeve, 1843)
Glycymeris tenuisulcatus (FOSSIL) A. von Koenen, 1893 †
Glycymeris terebratularis (FOSSIL) J.B.P.A. Lamarck, 1805 †
Glycymeris terebratularis paucidentata (FOSSIL) G.P. Deshayes, 1858 †
Glycymeris thomsoni (FOSSIL) J. Marwick, 1929 †
Glycymerita tohunga (FOSSIL) (L. C. King, 1934 †)