Classification of the genus Richardsonella
G. †Richardsonella Raymond 1924
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†Richardsonella convexa Rasetti 1944
†Richardsonella cristata Billings 1860
†Richardsonella elongata Rasetti 1944
†Richardsonella kainelliformis Shergold 1971
†Richardsonella megalops Billings 1860
†Richardsonella unisulcata Rasetti 1944
†Richardsonella variagranula Robison and Pantoja-Alor 1968