Classification of the genus Pachystylostroma
G. †Pachystylostroma Nestor 1964
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†Pachystylostroma contractum Nestor 1964
†Pachystylostroma copelandi Bolton 1988
†Pachystylostroma estoniense Nestor 1964
†Pachystylostroma exile Nestor 1964
†Pachystylostroma fragosum Nestor 1964
†Pachystylostroma hillistense Nestor 1964
†Pachystylostroma miriamae Bolton 1988
†Pachystylostroma opiparum Nestor 1964
†Pachystylostroma ozakii Bolshakova and Ulitina 1985
†Pachystylostroma rosensteinae Nestor 1964
†Pachystylostroma ungerni Rosen 1867