Classification of the order Phrynophiurida

Or. Phrynophiurida Matsumoto 1915
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Subor. Euryalina Lamarck 1816
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Fm. †Eospondylidae Spencer and Wright 1966
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G. †Eospondylus Gregory 1897
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†Eospondylus ingens Boczarowski 2001
†Eospondylus primigenius Stürtz 1886
G. †Kentrospondylus Lehmann 1957
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G. †Ophioflabellum Donofrio and Mostler 1977
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†Ophioflabellum altum Kristan-Tollmann et al. 1979
†Ophioflabellum cristatum Kristan-Tollmann et al. 1979
†Ophioflabellum hessi Donofrio and Mostler 1977
Fm. †Onychasteridae Miller 1889
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G. †Onychaster Meek and Worthen 1868
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†Onychaster asper Miller 1892
†Onychaster barrisi Hall 1861
†Onychaster flexilis Meek and Worthen 1868
†Onychaster flexilis Meek and Worthen 1868
†Onychaster strimplei Bjork et al. 1968
†Onychaster velbertensis Haude and Thomas 1983
Invalid names: Asteroschematidae Verrill 1899 [empty]
Fm. Trichasteridae Döderlein 1911
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Invalid names: Asteronychinae Matsumoto 1915 [empty], Trichasterinae Matsumoto 1915 [empty]