Cardiomya tigilensis (FOSSIL) (Slodkewitsch, 1935 †) Kurile islands
Bathyneaera tillamookensis (W.H. Dall, 1916) Oregon, Tillamook Bay
Cuspidaria tomlini B. Prashad, 1932
Cuspidaria tomricei G.T. Poppe & S.P. Tagaro,2016
Cardiomya tosaensis (J.T. Kuroda, 1948) Bahamas
Rhinoclama trailli (F.W. Hutton, 1873) New Zealand11 mm
Cuspidaria trigona (R.B. Hinds, 1843)
Pseudoneaera trigonalis (R. Tate, 1897)
Cuspidaria trosaetes W.H. Dall, 1925 Philippines, Camotes Island4,1 mm
Cuspidaria truncata C. Hedley, 1905 New South Wales
Jeffreysomya truncata (J.G. Jeffreys, 1882) Portugal
Rhinoclama tsugaruensis Yamazaki, 2008
Cuspidaria tuhua R.K. Dell, 1962 New Zealand
Cuspidaria turgida A.E. Verrill & K.J. Bush,1898 Massachusetts, Nantucket
Cuspidaria undata (A.E. Verrill, 1884) C. Indian Ocean (1"0'N, 76"17'E)23,8 mm
Cardiomya unistriata J.A. Allen, 2011
Rhinoclama valdiviae (K.H.J. Thiele& S.G.A. Jaeckel, 1931)
Cuspidaria variabilis (FOSSIL) Warren, 1934 † Canada, Saskatchewan, Division No. 3
Cuspidaria variola F.R. Bernard, 1979
Cuspidaria ventricosa A.E. Verrill & K.J. Bush,1898 Massachusetts, Nantucket
Cuspidaria vicdani G.T. Poppe & S.P. Tagaro,2016
Cuspidaria victoriae (FOSSIL) Melleville, 1843 † France, Paris Basin13 mm
Pseudogrippina wanganellica B.A. Marshall, 2002 New Zealand
Cuspidaria wapixana R.S. Absalão& C.D. de Castro Oliveira, 2011
Pseudoneaera wellmani (C.A. Fleming, 1948) New Zealand
Cuspidaria willetti C.A. Fleming, 1948 New Zealand, North Island25 mm
Cuspidaria wollastonii (E.A. Smith, 1885) Northern Atlantic