Classification of Miller 1889
G. †Cyrtolites Conrad 1838
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†Cyrtolites carinatus Miller 1874
†Cyrtolites ornatus Conrad 1838
G. †Ptychoparia Corda 1847
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†Ptychoparia depressa Shumard 1861
†Ptychoparia zenkeri Billings 1860
G. Stomatopora Bronn 1825
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†Stomatopora auloporoides Nicholson 1875
†Stomatopora frondosa Nicholson 1875
G. †Palaeaster Hall 1852
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†Palaeaster antiquus Troost 1835
†Palaeaster crawfordsvillensis Miller 1880
G. †Onychaster Meek and Worthen 1868
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†Onychaster flexibilis Meek and Worthen 1868
G. †Archaeocrinus Wachsmuth and Springer 1881
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†Archaeocrinus lacunosus Billings 1857
†Archaeocrinus microbasalis Billings 1857
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Invalid names: Archaeocrinus microbasalis Billings 1857 [replaced], Archaeocrinus microbasalis Billings 1857 [replaced]
Subg. †Carinaropsis (Phragmostoma) Hall 1861
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†Carinaropsis (Phragmostoma) cunulae Hall 1861
G. †Codonites Meek and Worthen 1869
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†Codonites fusiformis Wachsmuth and Springer 1888