Fig 10. <i>Ophiacantha rhachophora</i> H.L. Clark, 1911, holotype USNM 25630, 5.6 mm dd, details, SEM.
<dl><dd>A–L, proximal segments. A, lateral arm plate; B, same, inside view; C, ventral arm plate; D, dorsal spine; E, arm spine articulations; F, spine, ventral view; G, hollow dorsal spine, transversally sectioned at middle part; H, ventral spine; I, vertebra, dorsal view; J, same, ventral view; K, same, distal view; L, same, proximal view; M–R, middle segments. M–N, lateral arm plates showing spine-like protuberance; O, arm spine articulations; P, vertebra, dorsal view; Q, same, distal view; R, ventral arm plate. Red asterisks indicate the absence of the vertebral condyle (streptospondylous articulation) on both proximal and distal vertebrae. Scales bars, 0.05 mm (E, F, Q), 0.1 mm (A–C, G, H, J, K–R), 0.2 mm (D, I).</dd></dl>
Martynov, A., Ishida, Y., Irimura, S., Tajiri, R., O’Hara, T.D., Fujita, T. 2015. When Ontogeny Matters: A New Japanese Species of Brittle Star Illustrates the Importance of Considering both Adult and Juvenile Characters in Taxonomic Practice. PLoS ONE. 10(10): e0139463.
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