Classification of the genus Ctenocystis
G. †Ctenocystis Robison and Sprinkle 1969
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†Ctenocystis colodon Ubaghs and Robison 1988
†Ctenocystis jagoi Jell et al. 1985
†Ctenocystis smithi Ubaghs 1987
†Ctenocystis utahensis Robison and Sprinkle 1969