Classification of the subclass Somasteroidea

Cl. †Somasteroidea Spencer 1951
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G. †Archegonaster Jaekel 1923
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Archegonaster pentagonus Spencer 1951
G. †Catervaparmaster Blake 2000
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Fm. †Chinianasteridae Spencer 1951
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G. †Chinianaster Thoral 1935
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Chinianaster levyi Thoral 1935
G. †Ophioxenikos Blake and Guensburg 1993
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Ophioxenikos langenheimi Blake and Guensburg 1993
G. †Thoralaster Dean Shackleton 2005
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Thoralaster spiculiformis Dean Shackleton 2005
G. †Villebrunaster Spencer 1951
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Villebrunaster fezouataensis Hunter and Ortega-Hernández 2021
Villebrunaster thorali Spencer 1951
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Invalid names: Ampullaster ubaghsi Fell 1963 [synonym]
Invalid names: Ampullaster Fell 1963 [synonym], Cantabrigiaster Hunter and Ortega-Hernández 2021 [synonym]
Invalid names: Villebrunasteridae Fell 1963 [synonym]
Or. †Goniactinida Spencer 1951
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Invalid names: Archophiactinidae Spencer 1927 [empty]
Invalid names: Archegonasteridae Spencer 1951 [empty]