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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.
Fig. 22. Amphilimnidae O in Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata)
Fig. 22. Amphilimnidae O'Hara, Stöhr, Hugall, Thuy & Martynov, 2018, Amphilimna olivacea (Lyman, 1869). A–C = micro-CT; D–H, J–N = SEM; I = digital image. A. adGP, abGP, wing-like LAPs in situ. B. Detail of A, different angle. C. adGP in situ, dorsal aspect. D. adGP, adradial aspect. E. Radial shield, inner aspect. F. RS articular structures. G. abGP, abradial aspect. H. abGP, adradial aspect. I. Jaw in situ, bleached. J. Oral shield, inner aspect. K–L. oGP inner/outer aspects (unclear which is which). M. Madreporite, inner aspect. Scale bars: A–C, F, J–M = 0.2 mm; D–E, G–I = 0.5 mm.
Fig. 21. Ophiolepididae Ljungman, 1867 in Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata)
Fig. 21. Ophiolepididae Ljungman, 1867, SEM, unless otherwise noted. A–L. Ophiolepis variegata Lütken, 1856. A. Oral disc, digital image. B. Genital plates at arm. C. adGP, abradial aspect. D. adGP, adradial aspect. E. Radial shield and abGP at arm. F. abGP and adGP articulated. G. abGP, inner aspect. H. Oral shield, inner aspect. I. Madreporite, inner aspect. J–K. Oral GP, uncertain aspects. L. Radial shield, inner aspect.M–P. Ophiotypa simplex Koehler, 1897. M. adGP articulated at arm and under fused radial shields (or radial primary plates). N. oGP, inner aspect. O. oGP, outer aspect. P. Radial shields (or radial primary plates), inner aspect. Scale bars: A–G, L–M, P = 1 mm; H–K = 0.5 mm; N–O = 0.2 mm.
Fig. 20. Hemieuryalidae Verrill, 1899 in Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata)
Fig. 20. Hemieuryalidae Verrill, 1899. Ophiozonella longispina (H.L. Clark, 1908), SEM, unless otherwise noted. A. Section of ventral aspect, digital image. B. adGP, abradial aspect. C. adGP, adradaial aspect. D. adGP, dorsal aspect. E. abGP, dorsal aspect. F. Madreporite, inner aspect. G. Oral shield, inner aspect. H. Radial shield, inner aspect. Scale bars: 0.5 mm.
Fig. 17. Ophiocamacidae O in Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata)
Fig. 17. Ophiocamacidae O'Hara, Stöhr, Hugall, Thuy & Martynov, 2018. Ophiocamax vitrea Lyman, 1878, SEM, unless otherwise noted. A. Adradial genital plate, dorsal aspect. B. Adradial genital plate, lateral aspect. C. Abradial genital plate. D. Oral genital plates in situ, digital photo. E. Oral shield and genital plates, micro-CT. F. Oral genital plates. G. Radial shield, internal aspect. H. Oral shield, internal aspect. I. Madreporite, internal aspect. Scale bars: A–E, G = 0.5 mm; F, H–I = 0.1 mm.
Fig. 18. Ophiotomidae Paterson, 1985 in Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata)
Fig. 18. Ophiotomidae Paterson, 1985. Ophiocomina nigra (Abildgaard in O.F. Müller, 1789), SEM, unless otherwise noted. A–B. abGP and adGP in situ (micro-CT). C. adGP and abGP at arm. D. adGP abradial aspect. E. abGP, lateral aspect. F. Radial shield, inner aspect. G. Oral GP in situ, bleached specimen, digital photo. H. oGPs at madreporite, inside disc view, micro-CT. I. Oral shield, internal aspect. J. Madreporite, inner aspect. K. Oral GPs. Scale bars: A–J = 0.5 mm; K = 0.1 mm.
Fig. 19. Ophiotomidae Paterson, 1985, SEM. A–E. Ophiocopa spatula Lyman, 1883. A. Radial shield, inner aspect. B. adGP, abradial aspect. C. adGP, adradial aspect. D. Madreporite, inner aspect. E. abGP, abradial aspect. F–I in Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata)
Fig. 19. Ophiotomidae Paterson, 1985, SEM. A–E. Ophiocopa spatula Lyman, 1883. A. Radial shield, inner aspect. B. adGP, abradial aspect. C. adGP, adradial aspect. D. Madreporite, inner aspect. E. abGP, abradial aspect. F–I. Ophiotreta valenciennesi (Lyman, 1878). F. Radial shield, inner aspect. G. adGP, abradial aspect. H. adGP, abradial aspect. I. abGP. Scale bars: A–E = 0.5 mm; F–I = 1 mm.
Fig. 13 in Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata)
Fig. 13. Ophiodermatidae, Ljungman, 1867, Ophioderma longicaudum (Bruzelius, 1805), SEM, unless otherwise noted. A–C. adGP and abGP in situ, in various orientations, micro-CT. D. adGP and abGP in situ. E. adGP, abradial aspect. F. abGP, arrow points to corresponding articular structure on adGP. G. adGP, adradial aspect. H. adGP, dorsal view. I–J. adGP, distal aspect. K. Radial shield, inner side. L. Oral shield, inner side. M. Jaw (arrowhead marks oGP), bleached, digital photo. N. Jaw with oral shield removed, oGP exposed (arrowheads), bleached, digital photo. O. Pair of oGP, ventral aspect. P. oGP, lateral aspect. Q. Madreporite, inner side. Scale bars: 0.5 mm.
Fig. 14. Ophiomyxidae Ljungman, 1867 in Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata)
Fig. 14. Ophiomyxidae Ljungman, 1867, SEM, unless otherwise noted. A–K. Ophiomyxa serpentaria Lyman, 1883. A–C. Digital photos. A. Arm, dorsal view. B. Arm and mouth section. C. Arm and mouth section with oral shield removed. D. Arm with genital plates attached. E. adGP, adradial aspect. F. adGP, abradio-ventral aspect. G. abGP, arrow connects articular structures. H. Madreporite, inner aspect. I. Oral shield, inner aspect. J. oGPs. K. Radial shield, inner aspect. L–Q. Ophiomyxa pentagona (Lamarck, 1816). L. oGPs, view from inside disc, micro-CT. M. adGP, adradial aspect. N. adGP, abradial aspect. O. abGP, arrow connects articular structures. P. Radial shield, inner aspect. Q. Madreporite, inner aspect. R–S. Ophiarachna incrassata (Lamarck, 1816). R. adGP, abradial aspect. S. abGP. Scale bars: A–Q = 0.5 mm; R–S = 1 mm.
Fig. 15. Ophiocomidae Ljungman, 1867 in Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata)
Fig. 15. Ophiocomidae Ljungman, 1867, SEM, unless otherwise noted. A–P. Ophiocoma scolopendrina (Lamarck, 1816). A. Genital plates in situ, dorsal view, digital photo. B. Genital plates in situ, distal ends, adradial view, micro-CT. C–D. adGP, abGP and RS articulating, adradial aspect. E. Radial shield, inner aspect. F. adGP, ventro-adradial aspect. G. adGP, abradial aspect. H. adGP, abradial aspect. I. abGP, abradial aspect, arrow connects articular structures. J. abGP, adradial aspect. K. Ventral arms and mouth (arrowheads mark oGP), digital photo. L. Oral shield with oGP attached (arrowheads). M. oGP, abradial aspect. N. oGP, adradial aspect. O. Oral shield, inner aspect. P. Madreporite, inner aspect. Q–U. Ophiocoma erinaceus Müller & Troschel, 1842. Q. Radial shield, inner aspect. R. Oral shield, inner aspect. S. Madreporite, inner aspect. T. adGP, abradial aspect. U. abGP, adradial aspect. Scale bars: A–B, E, K–L, O–P= 0.5 mm; C–D, F–J, Q–U = 1 mm; M–N = 0.1 mm.
Fig. 9. Euryalidae Gray, 1840 in Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata)
Fig. 9. Euryalidae Gray, 1840, Euryale aspera Lamarck, 1816. A, G = digital images; B–F, H–J = SEM images. A. adGP in situ. B. adGP abradial view. C. adGP, dorso-adradial view. D. Radial shield, dorsal view. E. Radial shield, latero-ventral view. F. abGP. G. Section of ventral disc. H. Adoral shields and madreporite, inner view. I. Madreporite, inner aspect. J. Other madreporite, inner aspect. Scale bars: A–H = 1 mm; I–J = 0.5 mm
Fig. 6. A–G. Ophiomusaidae O in Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata)
Fig. 6. A–G. Ophiomusaidae O'Hara, Stöhr, Hugall, Thuy & Martynov, 2018, Ophiomusa lymani (Wyville-Thomson, 1873), SEM, unless otherwise noted. A–B. Micro-CT, adGP and abGP in situ. C. Oral shield, inner aspect. D. Madreporite, inner aspect. E. adGP, abradial view. F. abGP, adradial view. G. RS, inner aspect. H. Astrophiuridae Sladen, 1879, Astrophiura sp., adGP. Scale bars: A–G = 1 mm; H = 0.1 mm.
Fig. 12. Ophiohelidae Perrier, 1893.A–B. Ophiomyces frutectosus Lyman, 1869, digital photos.A. Lateral view. B in Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata)
Fig. 12. Ophiohelidae Perrier, 1893.A–B. Ophiomyces frutectosus Lyman, 1869, digital photos.A. Lateral view. B. Detail of genital plates in situ. C–H. Ophiomyces delata Koehler, 1904, SEM. C. adGP, abradial aspect. D. abGP, adradial aspect. E. Genital plates in situ. F. Oral shield, external aspect. G. Oral shield, inner aspect. H. Madreporite, inner aspect. Scale bars: A–B = 1 mm; C–E = 0.5 mm; F–H = 0.1 mm.
Fig. 5. Ophiopyrgidae Perrier, 1893 in Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata)
Fig. 5. Ophiopyrgidae Perrier, 1893, Ophiopleura borealis Danielssen & Koren, 1877, SEM images. A. Dorsal disc, scales removed by bleaching. B. Bleached arm with genital plates, ventral view. C. RS, distal part, ventral aspect. D. adGP and abGP attached to each other, abradial view. E. adGP, abradial view. F. adGP, adradial view. G. abGP, dorso-lateral view. H. abGP, ventral view. I. abGP, lateral view. J. Oral shield, inner side. K. Madreporite, inner side. Scale bars: A = 10 mm; B–K = 1 mm.
Fig. 1 in Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata)
Fig. 1. Ventral and inner disc morphology of Ophiuroidea, SEM. A. Ophionereis porrecta Lyman, 1860, ventral side. B. Inside of dorsal disc of Amphiura filiformis (O.F. Müller, 1776), cast off during collecting, adradial and abradial genital plates attached to each other and to underside of radial shields. Abbreviations: abGP = abradial genital plate; adGP = adradial genital plate; GS = genital slit; M = madreporite; oGP = oral genital plate; OS = oral shield; VAP = ventral arm plate. Scale bars: 1 mm.
Fig. 11 in Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata)
Fig. 11. Ophioscolecidae Lütken, 1869, Ophiolycus purpureus (Düben & Koren, 1846), SEM, unless otherwise noted. A. Mouth parts in situ (bleached, arrowheads mark oGPs), digital photo. B. oGP in situ (arrowheads), micro-CT. C. Oral GP. D. adGP and abGP in situ, micro-CT. E. adGP and abGP in situ. F. adGP and abGP, dissociated, adradial aspect. G. adGP, dorsal aspect. H. Radial shield, inner aspect. I. Oral shield, inner aspect. J. Madreporite, inner aspect. Scale bars: 0.5 mm.
Fig. 4. Ophiopyrgidae Perrier, 1893 in Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata)
Fig. 4. Ophiopyrgidae Perrier, 1893, Amphiophiura Matsumoto, 1915, SEM images, unless otherwise noted. A–G. A. latro (Koehler, 1904). A. Arm base, lateral aspect. B. abGP, radial aspect. C. abGP, abradial aspect. D. adGP, abradial aspect. E. adGP, adradial aspect. F. Radial shield, inner (ventral) aspect. G. Madreporite, inner (dorsal) aspect. H–P. A. insolita (Koehler, 1904). H. Radial shield, inner aspect. I. adGP, abradial aspect. J. adGP, dorsal view. K. adGP in situ, micro-CT. L. abGP in situ, microCT. M. abGP, abradial aspect (distal part with larger pores is exposed at disc edge). N. abGP, adradial aspect. O. abGP, distal end, arrowheads mark articular structures for genital papillae. P. Madreporite, inner aspect. Scale bars: A–O = 0.5 mm; P = 1 mm.
Fig. 8. Asteronychidae Verrill, 1899 in Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata)
Fig. 8. Asteronychidae Verrill, 1899, Asteronyx loveni Müller & Troschel, 1842. A = micro-CT; B–C = digital photos; D–J = SEM images. A–B. Radial shield and fused adradial and abradial genital plates in situ. C. Genital plates in situ. D. Genital plates, adradial view. E. Genital plates, abradial view. F. Radial shields, dissected from disc, distal ends fallen off. G. Detail of F, separating layers of radial shields. H. Radial shield distal end, inner aspect. I. Radial shield, distal end, outer side. J. Madreporite, inner aspect. Scale bars: A–G = 1 mm; H–J = 0.5 mm.
Fig. 7. Gorgonocephalidae Ljungman, 1867 in Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata)
Fig. 7. Gorgonocephalidae Ljungman, 1867, Gorgonocephalus caputmedusae (Linnaeus, 1758), SEM images (except A, D, digital images). A. Dorsal disc inner side with radial shields exposed. B. Radial shield distal end, ventrolateral view. C. Radial shield, distal end, ventral view. D. adGP in situ. E–G. adGP, distal end fragments. H. adGP proximal part fragment. I. Madreporite, inner aspect. Scale bars:
Fig. 3. Ophiopyrgidae Perrier, 1893 in Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata)
Fig. 3. Ophiopyrgidae Perrier, 1893, Ophiopyrgus Lyman, 1878, SEM images. A–F. Ophiopyrgus saccharatus Studer, 1882. A. Section of ventral disc and arm. B. Dorsodistal view of arm base with RS, adGP, abGP. C. RS, inner side. D. Oral plates with attached vertebrae, adGP and abGP. E. adGP, abradio-ventral view. F. abGP, surface connecting to RS. G–H. Ophiopyrgus wyvillethomsoni. G. adGP and abGP adjoined. H. Radial shield pair, inner side. Scale bars: A–F = 0.5 mm; G–H = 0.1 mm.
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