Adacnarca crenella (C. Vélain, 1877)
Adacnarca harrisonae (A.W.B. Powell, 1927)
Adacnarca limopsoides (K.H.J. Thiele, 1912)
Adacnarca nitens J.P.L. Pelseneer, 1903
Adacnarca ornata (M.A. Crozier, 1966)
Adacnarca pileopsis (A.W.B. Powell, 1927)
Adacnarca polarsterni E.N. Egorova, 2003
Adacnarca squamea C. Hedley, 1905
Adacnarca trapezina (F. Bernard, 1897)
Adacnarca velaini (E.A. Smith, 1904)
Aupouria elongata (FOSSIL) C.R. Laws, 1940 †
Aupouria parvula A.W.B. Powell, 1937
Aupouria pristina (FOSSIL) P.A. Maxwell, 1969 †
Aupouria rotunda (FOSSIL) C.R. Laws, 1940 †
Cosa auriculata C.F. Laseron, 1953
Cosa awamoana (FOSSIL) (C.R. Laws, 1941 †)
Cosa bordaensis (B.C. Cotton, 1931)
Cosa brasiliensis M.A. Klappenbach, 1966
Cosa caribaea R.T. Abbott, 1958
Cosa celsa (B.C. Cotton, 1931)
Cosa costata (F. Bernard, 1896)
Cosa crebreradiata (B.C. Cotton, 1931)
Cosa dispar A.W.B. Powell, 1937
Cosa filholi (F. Bernard, 1897)
Cosa fimbriata (R. Tate, 1898)
Cosa inconspicua (A.A. Olsson& J.T.L. McGinty, 1958)
Cosa kaawaensis (FOSSIL) C.R. Laws, 1936 †
Cosa kinjoi I. Hayami & T. Kase, 1993
Cosa laevicostata A.W.B. Powell, 1933
Cosa orbicula (FOSSIL) C.R. Laws, 1950 †
Cosa pacifica (K.H.J. Thiele& S.G.A. Jaeckel, 1931)
Cosa parallelogramma (C. Hedley, 1906)
Cosa paramoea (P. Bartsch, 1915)
Cosa pectinata (C. Hedley, 1902)
Cosa pharetra T. Iredale, 1931
Cosa pileata (K.H.J. Thiele& S.G.A. Jaeckel, 1931)
Cosa praeuntia (FOSSIL) (Tate 1898) †
Cosa sagana T. Iredale, 1931
Cosa scabra (C. Hedley, 1906)