Classification of the genus Heterocrinus
G. †Heterocrinus Hall 1872
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Subg. †Heterocrinus (Atyphocrinus) Ulrich 1925
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†Heterocrinus (Atyphocrinus) corryvillensis Ulrich 1925
†Heterocrinus canadensis Billings 1857
†Heterocrinus exiguus Meek 1872
†Heterocrinus exilis Hall 1866
†Heterocrinus heterodactylus Hall 1847
†Heterocrinus juvenis Hall 1866
†Heterocrinus pentagonus Ulrich 1882
†Heterocrinus simplex Hall 1847