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. 2015 Jul 10;1(6):e1500092. doi: 10.1126/sciadv.1500092

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Copyright © 2015, The Authors

This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license, which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.

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Fig. 2 — Thaumactena ensis gen. et sp. nov. (A to D), Galeactena hemispherica gen. et sp. nov. (E to I), and Batofasciculus ramificans (J to N). (A) Holotype (ELEL-SJ081427A) showing apical organ, body with rigid spokes (arrows), and oral skirt. (B) Close-up of aboral region in (A) showing arcuate spokes (arrows) and remains of ctenes (arrowheads); dark residues may represent gastric system. (C) Oral region in (A) (counterpart) showing flared oral skirt and membranous tissue supported by spokes (arrows). (D) Paratype (ELEL-SJ081563), a juvenile, showing spokes (arrows) and remains of ctene rows. (E) Holotype (ELI-JSCT0001). (F) Close-up of apical organ in (E) showing internal aboral canal and statolith remains. (G) Close-up of focus area in (E) showing remains of ctenes. (H) Paratype (ELI-JSCT0002). (I) Close-up of apical organ in (H). (J) Paratype (ELEL-SJ101932A) showing apical organ, body with spinose spokes, and oral region. (K) Close-up of oral region in (J) showing lappet-like structures. (L) Close-up of a spine (arrowed in J). (M) Close-up of aboral part in (J) showing apical plates, statolith, and radiating spokes (arrowheads). (N) Close-up of focus area in (M) showing a spine sheathed by membrane (arrows). ac, aboral canal; ao, apical organ; cr, ctene row; lp, lappet; or, oral region; os, oral skirt; pl, apical plates; sl, statolith. Arrowheads in (E), (G), and (H) indicate medial ridges of radiating lobes mantled by membranous fins. Scale bars, 5 mm (A to E, H, J, and M); 1 mm (F, G, I, K, L, and N).