Classification of Webster et al. 1999

Cl. Asteroidea de Blainville 1830 [sea star]
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G. †Pleiadeaster Webster et al. 1999
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†Pleiadeaster inceptus Webster et al. 1999
Or. †Pustulosida Spencer 1951
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Invalid names: Bimarginalina Kesling 1969 [empty]
Cl. Ophiuroidea Gray 1840 [brittle star]
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Or. Oegophiurida Matsumoto 1915
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Subor. Zeugophiurina Matsumoto 1929
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Fm. †Lapworthuridae Gregory 1897
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G. †Ophiopolytretus Webster et al. 1999
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†Ophiopolytretus aethus Webster et al. 1999
Cl. Crinoidea Miller 1821 [Sea lily]
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Subcl. †Camerata Wachsmuth and Springer 1885
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Or. †Monobathrida Moore and Laudon 1943
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Superfm. †Hexacrinitoidea Wachsmuth and Springer 1885
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Fm. †Dichocrinidae Miller 1889
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G. †Strimplecrinus Broadhead 1981
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†Strimplecrinus dyerensis Webster et al. 1999
Subcl. Cladida Moore and Laudon 1943
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Superfm. †Gasterocomacea Roemer 1854
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Fm. †Cupressocrinitidae Roemer 1954
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G. †Cupressocrinites Goldfuss 1831
Subor. †Poteriocrinina Jaekel 1918
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Superfm. †Decadocrinacea Bather 1890
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Fm. †Decadocrinidae Bather 1890
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G. †Eireocrinus Wright 1951
Superfm. †Poteriocrinitacea Austin and Austin 1842
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Fm. †Glossocrinidae Goldring 1923
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G. †Blothrocrinus Kirk 1940
G. †Catactocrinus Goldring 1923
Superfm. †Scytalocrinacea Moore and Laudon 1943
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Fm. †Scytalocrinidae Moore and Laudon 1943
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G. †Gilmocrinus Lauden 1933
G. †Hypselocrinus Kirk 1940
G. †Tarassocrinus Webster et al. 1999
Subcl. †Flexibilia Zittel 1895
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Or. †Taxocrinida Springer 1913
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Superfm. †Taxocrinacea Angelin 1878
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Fm. †Taxocrinidae Angelin 1878
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G. †Taxocrinus Phillips 1843