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Phrynophiurida
Taxonomy
Phrynophiurida was named by Matsumoto (1915). It is extant.
It was assigned to Myophiuroida by Matsumoto (1915); to Ophiuroidea by Spencer and Wright (1966) and Haude and Thomas (1983); and to Ophiuroidea by Boczarowski (2001) and Sepkoski (2002).
It was assigned to Myophiuroida by Matsumoto (1915); to Ophiuroidea by Spencer and Wright (1966) and Haude and Thomas (1983); and to Ophiuroidea by Boczarowski (2001) and Sepkoski (2002).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1915 | Phrynophiurida Matsumoto p. 45 |
| 1966 | Phrynophiurida Spencer and Wright p. U89 |
| 1983 | Phrynophiurida Haude and Thomas p. 138 |
| 2001 | Phrynophiurida Boczarowski p. 38 |
| 2002 | Phrynophiurida Sepkoski |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
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. †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]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| H. Matsumoto 1915 | Disk and arms covered by a skin. The radial shield and genital plate articulate by means of a simple face or a transverse ridge on either plate, without well-developed articular condyles and sockets. Peristomal plates large, entire, or sometimes double or triple. Oral frames entire, without well-developed lateral wings. Dorsal arm plates absent or very rudimentary; lateral arm plates ventral or subventral in position; dorsal side of arms largely unprotected. |