Classification of Rohr and Blodgett 2008
G. †Beraunia Knight 1937
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†Beraunia bifrons Perner 1903
†Beraunia bohemica Perner 1903
Fm. †Oriostomatidae Koken 1896
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G. †Kirkospira Rohr and Blodgett 2001
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†Kirkospira lindstroemi Oehlert and Oehlert 1888
G. †Medfracaulus Rohr et al. 2003
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†Medfracaulus turriformis Chernyshev 1893
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Invalid names: Medfracaulus cooki Rohr et al. 2003 [synonym]
G. †Baichtalia Rohr and Blodgett 2008
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†Baichtalia tongassensis Rohr and Blodgett 2008