Fig. 23. Ophionereididae Ljungman, 1867 in Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata)

Fig. 23. Ophionereididae Ljungman, 1867, SEM, unless otherwise noted. A–J. Ophionereis reticulata (Say, 1825). A. Oral aspect, digital image. B–C. Micro-CT. B. Oral shield with oGP, inner view. C. abGp, adGB and RS in situ. D. abGP and adGP in situ. E. adPG, abradial aspect. F. abGP. G. Radial shield, inner aspect. H. Oral shield, inner aspect. I. Madreporite, inner aspect. J. Oral genital plates, one with round tubercle/process. K–M. Ophionereis porrecta (Lyman, 1860). K. Radial shield, inner aspect. L. adGP, abradial aspect. M. abGP. N–P. Ophionereis degeneri (A.H. Clark, 1949). N. Radial shield, inner aspect. O. adGP, abradial aspect. P. abGP. Scale bars: 0.5 mm.