Thyasira acuticarinata (E.A. Smith, 1895)
Channelaxinus adelaideanus (T. Iredale, 1930)
Genaxinus albigena (FOSSIL) (C. Hedley, 1907 †)
Thyasira alleni F. Carrozza, 1981
Thyasira alta A.E. Verrill & K.J. Bush,1898
Thyasira anassa P.G. Oliver, 2015
Axinulus antarcticus D.G. Zelaya, 2010
Thyasira atlantica B.S. Payne & J.A. Allen,1991
Thyasira austrosulca (FOSSIL) J.D. Stilwell & al.,2004 †
Thyasira baca (FOSSIL) Devjatilova, 1981 †
Parathyasira bamberi P.G. Oliver, 2015
Thyasira barbarensis (W.H. Dall, 1890)
Thyasira bartrumi (FOSSIL) Powell, 1935 †
Conchocele bathyaulax (FOSSIL) C.J.S. Hickman, 2015 †
Thyasira becca (FOSSIL) †
Channelaxinus benthicola (T. Iredale, 1930)
Thyasira beui K. Amano,C. Little & al., 2015
Thyasira biplicata (R.A. Philippi, 1836)
Thyasira biscayensis B.S. Payne & J.A. Allen,1991
Conchocele bisecta (T.A. Conrad, 1849)
Axinulus bongraini (É. Lamy, 1911)
Thyasira borshengi T.A. Okutani & T.C. Lan,1999
Axinulus brevis (A.E. Verrill & K.J. Bush,1898)
Thyasira brongniarti (FOSSIL) G.P. Deshayes, 1857 †
Spinaxinus caldarium Oliver & Rodrigues, 2017
Thyasira capitanea Åström & Oliver, 2017
Axinulus careyi F.R. Bernard, 1979
Mendicula carrozae (B.S. Payne & J.A. Allen,1991)
Axinus cascadiensis P.G. Oliver & A.M. Holmes,2007
Thyasira chilensis (FOSSIL) R.A. Philippi, 1887 †
Conchocele compacta Ishizaki, 1942
Thyasira conia W.H. Dall & C.T. Simpson,1901
Genaxinus cookianus (FOSSIL) (C.A. Fleming, 1950 †)
Axinopsida cordata (A.E. Verrill & K.J. Bush,1898)
Axinulus croulinensis (J.G. Jeffreys, 1847)