Swiftopecten swifti (A.C. Bernardi, 1858)
Mesopeplum syagrus (FOSSIL) (J. Marwick, 1924 †)
Pecten tagicus (FOSSIL) Gotter, †
Pecten tagicus laleiensis (FOSSIL) Erunal-Erentoz, 1958 †
Serripecten tahuianus (FOSSIL) C.R. Laws, 1935 †
Fortipecten takahashii (FOSSIL) (M. Yokoyama, 1930 †)
Chlamys talahabensis (FOSSIL) Martin, 1922 †
Pecten tamiamiensis (FOSSIL) W.C. Mansfield, 1939 †
Chlamys tamurae O. Masuda & Sawada, 1961
Chlamys tamurai (FOSSIL) Tashiro, 1976 †
Leochlamys tanassevitschi (FOSSIL) Khomenko, 1934 †
Chlamys tapensis (FOSSIL) Milova, 1985 †
Mesopeplum tasmanicum (FOSSIL) (Adams, 1863 †)
Chlamys tauroperstriata (FOSSIL) F. Sacco, 1897 †
Chlamys tauroperstriaus (FOSSIL) F. Sacco, 1897 †
Eopecten tegulatus (FOSSIL) (P. Morris & J. Lycett,1853 †)
Aequipecten tehuelchus (A.V.M.D. D'Orbigny,1842)
Aequipecten tehuelchus madrynensis (A.R.J.B. Bavay, 1906)
Aequipecten tehuelchus spinosula (A.R.J.B. Bavay, 1906)
Aequipecten tehuelchus vanvincqii (A.C. Bernardi, 1852)
Pecten telegdirothi (FOSSIL) M. Csepreghy, 1960 †
Taimyronectes tener (FOSSIL) Kurushin, 1987 †
Chlamys tenuicostata (FOSSIL) Klushnikov, 1958 †
Volachlamys tenuisculpta (FOSSIL) (Cox 1927) †
Pecten terebratuloides (FOSSIL) Klipstein, 1843 †
Grandinectes teres (FOSSIL) Fürsich & Pan, 2014 †
Delectopecten terryi (FOSSIL) A.A. Olsson, 1942 †
Neithea texana (FOSSIL) F.A. Roemer, 1849 †
Chlamys textoria (FOSSIL) Schlotheim, 1820 †
Chlamys thalerus (FOSSIL) C.J. Maury, 1924 †
Pecten thaumastus (FOSSIL) C.J. Maury, 1924 †
Argopecten thetidis (FOSSIL) (Sowerby, 1850 †)
Chlamys thompsoni (FOSSIL) Stoyanow, 1949 †
Leptopecten thompsoni (FOSSIL) (C.J. Maury, 1917 †)
Phialopecten thomsoni (FOSSIL) J. Marwick, 1965 †