Nuculana arai T. Habe, 1958
Polidevcia arata (FOSSIL) (J.W. Hall, 1852 †)
Polidevcia arctura (FOSSIL) Yancey, 1978 †
Portlandella arcuata (FOSSIL) (Pronina, 1969 †)
Ledella argentinae J.A. Allen & G. Hannah,1989
Saccella arowhana (FOSSIL) J. Marwick, 1931 †
Jupiteria asiatica (FOSSIL) Kurushin, 1985 †
Litorhadia astoriana (FOSSIL) (J. Henderson, 1920 †)
Saccella atakta Gardner, 1927
Portlandella atomata (FOSSIL) (Pronina, 1969 †)
Polidevcia attenuata (FOSSIL) J. Fleming, 1828 †
Nuculana australis (FOSSIL) B. Wade, 1926 †
Ledella austrocubana Z.A. Filatova& A.A. Schileyko, 1984
Saccella balboae (FOSSIL) (J. Brown & H.A. Pilsbry,1911 †)
Nuculana barranca (FOSSIL) A.A. Olsson, 1930 †
Phestia basedowi (FOSSIL) (R. Etheridge jr.,1907 †)
Litorhadia bastropensis (FOSSIL) (G.F. Harris, 1895 †)
Nuculana bathybia (B. Prashad, 1932)
Nuculana belcheri (R.B. Hinds, 1843)
Calorhadia bella (FOSSIL) †
Polidevcia bellistriata (FOSSIL) (Stevens, 1858 †)
Nuculana bellula (A. Adams, 1856)
Nuculana beringii W.H. Dall, 1916
Nuculana biangulata (FOSSIL) Easton, 1962 †
Polidevcia bicarinata (FOSSIL) Guskov & Demskaja, 1984 †
Nuculana bicuspidata (A.A. Gould, 1845)
Ledella bipennis (W.H. Dall, 1927)
Saccella bolivarensis (FOSSIL) Clark & J.W. Durham,1946 †
Glyptoleda borealica (FOSSIL) Biakov, 1998 †
Nuculana borsoni (FOSSIL) Stoppani, 1863 †
Jupiteria bowdenensis (FOSSIL) W.P. Woodring, 1925 †
Comitileda brachyryncha (FOSSIL) P.A. Maxwell, 1992 †
Clidophorus brevi (FOSSIL) Foerste, 1924 †
Jupiteria brocchii (FOSSIL) (L.M.D. Bellardi, 1839 †)
Nuculana brookei (S.C.T. Hanley, 1860)