Cassidulina crassa d'Orbigny, 1839 accepted as Globocassidulina crassa (d'Orbigny, 1839)
Cassidulina laevigata d'Orbigny, 1826
Cassidulina obtusa Williamson, 1858
Cassidulina reniforme Nørvang, 1945
Cassidulina sagamiensis Asano & Nakamura, 1937 accepted as Paracassidulina sagamiensis (Asano & Nakamura, 1937)
Cassidulina teretis Tappan, 1951
Globocassidulina crassa (d'Orbigny, 1839)
Islandiella algida (Cushman, 1944)
Islandiella helenae Feyling-Hanssen & Buzas, 1976
Islandiella islandica (Nørvang, 1945) accepted as Islandiella algida (Cushman, 1944)
Islandiella norcrossi (Cushman, 1933)
Paracassidulina sagamiensis (Asano & Nakamura, 1937)