Classification of the subgenus Cyrtia (Pseudosyringothyris)
G. †Pseudosyringothyris Fredericks 1916
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†Pseudosyringothyris borealis Gobbett 1964
†Pseudosyringothyris karpinskii Fredericks 1916
†Pseudosyringothyris russiensis Zavodowsky 1968
†Pseudosyringothyris ustritskyi Kalashnikov 1981