Classification of Spencer 1930

G. †Helianthaster Roemer 1864
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Helianthaster rhenanus Roemer 1864
Uraster hirudo Forbes 1848
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Invalid names: Taeniaster meafordensis Foerste 1914 [synonym]
Fm. †Encrinasteridae Schuchert 1914
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G. †Urozoma Spencer 1930
Fm. †Taeniactinidae Spencer 1927
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Invalid names: Calyptactininae Spencer 1930 [empty]
Subcl. Ophiuroidea Gray 1840 [brittle star]
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Fm. †Euzonosomatidae Spencer 1930
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G. †Crepidosoma Spencer 1930
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Crepidosoma wenlocki Spencer 1930
G. †Encrinaster Haekel 1866
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Encrinaster arnoldi Goldfuss 1848
Encrinaster eifelensis Schöndorf 1910
Encrinaster grayae Spencer 1914
Encrinaster hamlingi Spencer 1930
G. †Euzonosoma Spencer 1930
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Euzonosoma goldfussi Schöndorf 1910
Euzonosoma montanum Raymond 1912
Euzonosoma orbitoides Spencer 1930
Euzonosoma petaloides Simonovitsch 1871
Euzonosoma pusillum Ruedemann 1916
Euzonosoma schmidti Schöndorf 1910
G. †Mastigactis Spencer 1930
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Mastigactis aranea Ruedemann 1916
G. †Urosoma Spencer 1930
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Urosoma hirudo Forbes 1848