Classification of the genus Hudsonaster
G. †Hudsonaster Stürtz 1899
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†Hudsonaster australis Withers and Keble 1934
†Hudsonaster carectum Herringshaw et al. 2007
†Hudsonaster incomptus Meek 1872
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Invalid names: Palaeaster clarkei Miller 1878 [synonym], Palaeaster simplex Miller and Dyer 1878 [synonym]
†Hudsonaster milleri Schuchert 1915
†Hudsonaster narrawayi Hudson 1912
†Hudsonaster ordovicus Spencer 1916
†Hudsonaster rugosus Billings 1857
Invalid names: Belaster Spencer 1916 [synonym], Protopalaeaster Hudson 1912 [synonym]