Classification of Rubel and Rozman 1977
Superfm. †Rhynchonellacea Gray 1848
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Fm. †Oligorhynchiidae Cooper 1956
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Fm. †Rhynchotrematidae Schuchert 1913
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G. †Stegerhynchus Foerste 1909
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†Stegerhynchus diodontus Dalman 1828
†Stegerhynchus pseudobidentatus Rybnikova 1967
Fm. †Trigonirhynchiidae McLaren 1965
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G. †Ancillotoechia Havlicek 1959
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†Ancillotoechia ancillans Barrande 1879
†Ancillotoechia bidentata Hisinger 1827
G. †Hemitoechia Nikiforova 1970