Classification of the genus Thedusia
G. †Thedusia Cooper and Grant 1976
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†Thedusia angustata Cooper and Grant 1976
†Thedusia biconvexa Cooper and Grant 1976
†Thedusia bucrenata Cooper and Grant 1976
†Thedusia dischides Cooper and Grant 1976
†Thedusia discissa Cooper and Grant 1976
†Thedusia emarginata Cooper and Grant 1976
†Thedusia latisulcata Yang 1986
†Thedusia magna Cooper and Grant 1976
†Thedusia mesocostata Cooper and Grant 1976
†Thedusia paucicostata Cooper and Grant 1976
†Thedusia procera Cooper and Grant 1976
†Thedusia trigonalis Girty 1908
†Thedusia ventricosa Cooper and Grant 1976