Classification of Palmer 1960
G. †Litocephalus Resser 1937
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†Litocephalus granulomarginatus Palmer 1960
†Litocephalus verruculapeza Palmer 1960
Invalid names: Pterocephalina Resser 1938 [synonym]
G. †Prehousia Palmer 1960
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†Prehousia alata Palmer 1960
†Prehousia semicircularis Palmer 1960
G. †Pseudosaratogia Wilson 1951
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†Pseudosaratogia abnormis Palmer 1960
†Pseudosaratogia leptogranulata Palmer 1960
G. †Dunderbergia Walcott 1924
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†Dunderbergia bigranulosa Palmer 1960
†Dunderbergia polybothra Palmer 1960
G. †Sigmocheilus Palmer 1960
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†Sigmocheilus grata Resser 1942
†Sigmocheilus pogonipensis Resser 1942
†Sigmocheilus serratus Palmer 1960
†Sigmocheilus utahensis Resser 1942
Fm. †Pterocephaliidae Kobayashi 1935
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Subfm. †Pterocephaliinae Palmer 1960
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G. †Cernuolimbus Palmer 1960
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†Cernuolimbus depressus Palmer 1960
†Cernuolimbus orygmatos Palmer 1960
†Cernuolimbus semigranulosus Palmer 1960
G. †Pterocephalia Roemer 1849
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†Pterocephalia concava Palmer 1960
†Pterocephalia elongata Palmer 1960