Glycymeris sloani (FOSSIL) Ward& B.W. Blackwelder, 1987 † USA, North Carolina, Pamlico
Glycymeris slodkewitschi (FOSSIL) V.N. Sinelnikova, 1984 † Western Kamchatka
Glycymeris snatolensis (FOSSIL) Slodkewitsch, 1938 † Western Kamchatka
Tucetona sordida (R. Tate, 1891) South Australia, Adelaide32,7 mm
Glycymeris soriensis (FOSSIL) F.E. Eames, 1951 † Pakistan, Punjab, Dera Ghazi Khan
Glycymeris spectralis D. Nicol, 1952 Florida, Palm Beach County
Glycymeris spurca L.A. Reeve, 1843 Okinawa
Glycymeris staminea (FOSSIL) T.A. Conrad, 1833 † United States, Alabama, Clarke
Glycymeris stellata (J.G. Bruguière, 1789) Senegal, Dakar54,5 mm
Glycymeris stellata vovan É. Lamy, 1912 Senegal, Dakar60 mm
Glycymeris striatoundata A. Matsukuma, 1984 Australia
Glycymeris striatularis (J.B.P.A. Lamarck, 1819) Kuwait47,8 mm
Tucetona strigilata (G.B. I Sowerby, 1833) Mexico, Manzanillo27 mm
Tucetona strigilata canoa H.A. Pilsbry& A.A. Olsson, 1941 Panama West22,7 mm
Tucetona strigillata (FOSSIL) (Sowerby, 1833 †) Costa Rica
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 † Denmark
Costaglycymeris subovata (FOSSIL) (T. Say, 1824 †) Florida
Tucetona subpectiniformis (S. Nomura & N. Zinbo,1934) Indo-Pacific
Tucetona subtilis D. Nicol, 1956 Bahamas10,1 mm
Glycymeris subtrigonalis (FOSSIL) R. Tate, 1886 † South Australia
Glycymeris suwannensis (FOSSIL) W.C. Mansfield, 1937 † USA, Florida, Pasco
Glycymeris swartsi (FOSSIL) L.G. Hertlein, 1927 † Mexico, San Bartolome Bay
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) South Australia36 mm
Glycymeris tenuisulcatus (FOSSIL) A. von Koenen, 1893 † Ukraine
Glycymeris terebratularis (FOSSIL) J.B.P.A. Lamarck, 1805 † France, Paris Basin54 mm
Glycymeris terebratularis paucidentata (FOSSIL) G.P. Deshayes, 1858 † France, Paris Basin39 mm
Glycymeris thomsoni (FOSSIL) J. Marwick, 1929 †
Glycymerita tohunga (FOSSIL) (L. C. King, 1934 †)