Keenocardium starobogatovi (FOSSIL) A.I. Kafanov & Savizky,1982 †
Keenocardium tigilense (FOSSIL) (Slodkewitsch, 1938 †)
Laevicardium brasilianum (J.B.P.A. Lamarck, 1819)
Laevicardium castanea E. Vidal, 2005
Laevicardium clarionense (L.G. Hertlein& A.M. Strong, 1947)
Laevicardium compressum (FOSSIL) W.H. Dall, 1900 †
Laevicardium crassum (J.F. Gmelin, 1791)
Laevicardium decorticatum (FOSSIL) Wood, 1840 †
Laevicardium ecuadoriale (FOSSIL) A.A. Olsson, 1932 †
Laevicardium elatum (I, 1833)
Laevicardium etheringtoni (FOSSIL) Slodkewitsch, 1938 †
Laevicardium excomatulum (FOSSIL) M. Glibert & Poel, 1965 †
Laevicardium kirkinskayae (FOSSIL) Krishtofovich, 1957 †
Laevicardium kovacovense (FOSSIL) Senes, 1958 †
Laevicardium kuluvense (FOSSIL) V.N. Sinelnikova, 1980 †
Laevicardium leptorinum (FOSSIL) D.T. Dockery, 1982 †
Laevicardium lobulatum (G.P. Deshayes, 1855)
Laevicardium majanatschensis (FOSSIL) V.N. Sinelnikova, 1990 †
Laevicardium melvilli (FOSSIL) R.B. Newton, 1905 †
Laevicardium mortoni (T.A. Conrad, 1831)
Laevicardium multilineatum W.H. Dall & W. Stimpson,1901
Laevicardium nemo E. Fischer-Piette, 1977
Laevicardium nemocardiforme (FOSSIL) A.I. Kafanov & Savizky,1983 †
Laevicardium oblongum (J.F. Gmelin, 1791)
Laevicardium pictum (E. Ravenel, 1861)
Laevicardium pristis (J.B.G.M. Bory De Saint-Vincent, 1827)
Laevicardium puchlense (FOSSIL) Ilyina, 1949 †
Laevicardium serratum (C. Linnaeus, 1758)
Laevicardium serratum oviputamen (L.A. Reeve, 1844)
Laevicardium subcostale (FOSSIL) (A. Petrov, 1982 †)
Laevicardium substriatum (T.A. Conrad, 1837)
Laevicardium substriatum elenensis (G.B. II Sowerby, 1840)
Laevicardium subturgidum (FOSSIL) (A.V.M.D. D'Orbigny,1852 †)
Laevicardium subturgidum millasiense C.F. Fontannes, 1881
Laevicardium sybariticum (W.H. Dall, 1886)
Laevicardium taracaicum (FOSSIL) (M. Yokoyama, 1930 †)
Laevicardium tegalense (FOSSIL) C.H. Oostingh, 1934 †