Pseudocatillus subzlatarskii (FOSSIL) Ebersin, 1967 † Russia
Acrosterigma suduirauti E. Vidal& J.J. Ter Poorten, 2007 Philippines, Aliguay Island30,5 mm
Fragum sueziense (A. Issel, 1869) South Africa, Natal6,1 mm
Acrosterigma suluanum E. Vidal, 1999 Philippines, Sulu Island
Didacna surachanica (FOSSIL) N.I. Andrusov †
Acrosterigma swanae (Maxwell, Congdon& Rymer, 2016)
Laevicardium sybariticum (W.H. Dall, 1886) Florida17,2 mm
Ctenocardia symbolica T. Iredale, 1929 Papua New Guinea18 mm
Vepricardium taiwanensis (FOSSIL) O. Masuda & Y.F. Huang,1990 † Taiwan
Nemocardium takaradaiense (FOSSIL) Scheremetjeva, 1977 † Russia, Sakhalin
Cardium talahabense (FOSSIL) Martin, 1922 † Indonesia, Jawa Tengah, Wonosobo
Dinocardium taphrium (FOSSIL) W.H. Dall, 1900 † Florida33 mm
Laevicardium taracaicum (FOSSIL) (M. Yokoyama, 1930 †) Western Kamchatka
Laevicardium tegalense (FOSSIL) C.H. Oostingh, 1934 † Indonesia, Jawa Tengah, Wonosobo
Fulvia tenuicostata (J.B.P.A. Lamarck, 1819) Australia, Lakes Entrance59 mm
Microcardium tenuilamellosum J. Poutiers, 1981 Philippines, Mactan Island9 mm
Cardium tenuistriatum (FOSSIL) (R.P. Whitfield, 1885 †) Tennessee, McNairy County
Laevicardium tenuisulcatum (FOSSIL) (P. Nyst, 1836 †) Germany, Rheinland-Pfalz54 mm
Parvicardium tenuitesta (FOSSIL) (Cossmann 1908) †
Acrosterigma terpoorteni Thach, 2017
Vasticardium terpoorteni Hylleberg, 2015
Laevicardium tertium E. Fischer-Piette, 1977
Nemocardium textum (FOSSIL) (Bronn, 1831) †
Frigidocardium thaanumi (H.A. Pilsbry, 1921) Hawaii11,8 mm
Agnocardia thalassium (FOSSIL) (C.J. Maury, 1925 †) Brazil, Rio Pirabas
Trachycardium thalassium (FOSSIL) C.J. Maury, 1924 † Brazil, ParC?, SCLo Caetano de Odivelas
Pratulum thetidis (C. Hedley, 1902) South Australia11 mm
Vasticardium thomassini E. Vidal, 1998 Madagascar, Tulear
Keenocardium tigilense (FOSSIL) (Slodkewitsch, 1938 †) Western Kamchatka
Microcardium tinctum (W.H. Dall, 1881) Bahamas13,3 mm
Dallocardia tintinnabularum (FOSSIL) (C.J. Maury, 1917 †) Dominican Republic27 mm
Cardium tokyoensis (FOSSIL) S. Tokunaga, 1906 † Japan, Tokyo
Frigidocardium torresi (E.A. Smith, 1885) Philippines, Aliguay Island14 mm
Acrosterigma transcendens (J.C. Melvill& R. Standen, 1899) Philippines, Balicasag Island25 mm
Ctenocardia translata (B. Prashad, 1932) Philippines, Pandanan Island4 mm