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Appendicularia sicula from the Adriatic Sea
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aboral (6, 11), oral (7, 10), left lateral (8), and posterior (9) views from pl. 31 in Koehler, R. 1909. Échinodermes provenant des campagnes du yacht Princesse-Alice (Astéries, Ophiures, Échinides et Crinoïdes). Résultats des campagnes scientifiques accomplies sur son yacht par Albert Ier Prince souverain de Monaco 34, 1-317.
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lateral (A–C) and ventral (D, E) views; first (F) and second (G) dorsal fins; pectoral (H) and caudal (I) fins. HUMZ 149389 (holotype), adult male, 590 mm TL (A, D, F–I); HUMZ 80329 (paratype), adult female, 770 mm TL (B); HUMZ 80330 (paratype), juvenile male, 365 mm TL (C, E). Scale bars: 50 mm (A–E); 20 mm (F–I). Source: https://doi.org/10.3897/zse.96.51962
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Ctenocidaris geliberti.
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Naha Japan, 2017-01-30
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Barkley Sound, British Columbia
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Aporometra occidentalis HL Clark, 1938, paratype, Natural History Museum, London (NHM) cat. no. 1938.5.9.1-3, aboral view.
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aboral, oral, lateral views and ambulacrum details from Cotteau, G. H. & Triger, J. 1857-1869. Échinides du département de la Sarthe, considérés au point de vue zoologique et stratigraphique. J.-B. Baillière et Fils, Paris, xv+457 pp.
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Retiometra alascana A. H. Clark, 1936, holotype, National Museum of Natural History, Washington, D.C. (USNM) cat. no. E1141, lateral view, close-up.
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Sierradiadema kristini (holotype CASG 72939); image courtesy of Rich Mooi, California Academy of Science (CAS).
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immature individual from the Adriatic Sea
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pedicellariae (12: tridactylous, 13: rostrate, 14-15: globiferous, 16: ophicephalous, 17: trifoliate) + tubefeet ossicles (18) from pl. 31 in Koehler, R. 1909. Échinodermes provenant des campagnes du yacht Princesse-Alice (Astéries, Ophiures, Échinides et Crinoïdes). Résultats des campagnes scientifiques accomplies sur son yacht par Albert Ier Prince souverain de Monaco 34, 1-317.
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Ctenocidaris perrieri / left: complete view, right: detail of the oral view.
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Eviota afelei, USNM 259379, preserved specimen, 17.1 mm SL, Fiji. Source: http://dx.doi.org/10.5281/zenodo.48268
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Barkley Sound, British Columbia
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Caenopedina annulata (aboral view), holotype
SNMNH E09093, Tidore Island & Halmahera Island, Mollucas, Indonesia, Molluca Sea, Pacific Ocean.