The representatives of the genus Cystodytes (family Polycitoridae) have been described from the Pliocene of France by Monniot (1970, 1971) and Deflandre-Rigaud (1956), and from Eocene of France by Monniot and Buge (1971), and lately from the Late Eocene of S Australia by Łukowiak (2012).
Describíronse representantes do xénero Cystodytes (da familia Polycitoridae) do Plioceno de Francia por Monniot (1970, 1971) e Deflandre-Rigaud (1956), e do Eoceno de Francia por Monniot e Buge (1971), e ultimamente do Eoceno tardío do sur de Australia por Łukowiak (2012).