Fig 6. Comparison of the oral frame patterns in <i>O. rhachophora</i> H.L. Clark 1911 and <i>O. kokusai</i> sp. nov. and (specimen NSMT E–1540 and paratype NSMT E–7638 respectively) using the grinding method technique.
<dl><dd>A–C, three consecutive sections of the disk of <i>O. rhachophora</i> showing placement of only three oral papillae (including distalmost one) emerging exclusively from the jaws; D–F, three consecutive sections of the disk of <i>O. kokusai</i> sp.nov. showing placement of three oral papillae emerging from jaws and a fourth separate thorny papilla emerging from the adoral shield. ap, adoral shield papillae; as, adoral shields; dp, dental plate; gs, genital slit; j, jaws; op, oral papillae; os, oral shield; th, teeth; red asterisks indicate the absence of the adoral shield papillae in <i>O. rhachophora</i> (A–C). Scale bars, 1 mm.</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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