Classification of Blake and Guensburg 1993

Cl. Asteroidea de Blainville 1830 [sea star]
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Subor. †Uractinina Spencer 1951
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Fm. †Cnemidactinidae Spencer 1918
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G. †Cnemidactis Spencer 1918
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†Cnemidactis macroadambulacralatas Blake and Guensburg 1993
G. †Stibaraster Blake and Guensburg 1993
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†Stibaraster ratcliffei Blake and Guensburg 1993
Subph. Stelleroidea Gregory 1900
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Cl. †Somasteroidea Spencer 1951
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Or. †Goniactinida Spencer 1951
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Fm. †Chinianasteridae Spencer 1951
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G. †Ophioxenikos Blake and Guensburg 1993
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†Ophioxenikos langenheimi Blake and Guensburg 1993