Classification of the genus Orthosurcula
G. †Orthosurcula Casey 1904
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†Orthosurcula regularis Koninck 1837
†Turricula (Orthosurcula) cochlis Edwards 1861
†Turricula (Orthosurcula) crassa Edwards 1857
†Turricula (Orthosurcula) keelei Edwards 1857
†Turricula (Orthosurcula) teretrium Edwards 1857
†Turricula (Orthosurcula) teretrium crebrilinea Edwards 1857