Ledina taioma (FOSSIL) (H.J. Finlay& J. Marwick, 1937 †)
Nuculana taiwanica T.A. Okutani & T.C. Lan,1998
Nuculana takaoensis K. Otsuka, 1936
Clidophorus tamarackensis (FOSSIL) Foerste, 1924 †
Nuculana tanseimaruae E. Tsuchida & T.A. Okutani,1985
Saccella taphria (W.H. Dall, 1897)
Dacryomya tarua (FOSSIL) Skwarko, 1973 †
Nuculana tashiensis T.C. Lan & Y.C. Lee, 2001
Ledella tasmanica (J. Knudsen, 1970)
Nuculana tatarica (FOSSIL) Slodkewitsch,1938 ex Kogan MS †
Adrana tellinoides (G.B. I Sowerby, 1823)
Saccella tenellula (FOSSIL) J.A. Bartrum & Powell,1928 †
Nuculana tenuisulcata (J.P.Y. Couthouy, 1838)
Polidevcia thomasi (FOSSIL) Dickins, 1956 †
Nuculana thompsoni (FOSSIL) Cox, 1965 †
Phestia thompsoni (FOSSIL) (Reed, 1932 †)
Nuculana timorensis (FOSSIL) Krumbeck, 1924 †
Nuculana titei (FOSSIL) (Moore) †
Mesosaccella toddi (FOSSIL) Hryniewicz & al., 2014 †
Jupiteria totangiensis (FOSSIL) J. Marwick, 1931 †
Nuculana transversa (FOSSIL) Martin, 1883 †
Portlandella triangula (FOSSIL) (L. Krishtofovich,1969 †)
Nuculana triangulata (FOSSIL) Meyer, 1886 †
Nuculana trivitate (FOSSIL) †
Propeleda trulliformis (FOSSIL) J. Marwick, 1931 †
Nuculana trumani (FOSSIL) †
Nucundata truncata (FOSSIL) C.O. Waterhouse, 1964 †
Nuculana tuberculata (E.A. Smith, 1872)
Polidevcia tulcumbensis (FOSSIL) G.B. Campbell & H. Engel,1963 †
Nuculana tumidula (FOSSIL) A.E.M. Cossmann, 1886 †
Nuculana tumiensis (FOSSIL) L. Krishtofovich, 1949 †
Lamellileda typica B.C. Cotton, 1930
Jupiteria uawa (FOSSIL) J. Marwick, 1931 †
Ledella ultima (E.A. Smith, 1885)
Parayoldiella ultraabyssalis (Z.A. Filatova, 1971)