Praeexogyra dubiensis (FOSSIL) (Contejean, 1859 †) Kenya, Mandera, Lafey
Acutostrea idriaensis (FOSSIL) (W.M. Gabb, 1869 †) USA, Washington
Acutostrea miguelensis (FOSSIL) (L.G. Hertlein, 1928 †) USA, California
Praeexogyra monsbeliardensis (FOSSIL) (Contejean, 1859 †) Switzerland
Helvetostrea sequana (FOSSIL) (Thurmann & Étallon,1862 †) Switzerland