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Arbacia dufresnii / left: oral view, upper right: apical view, lower right: lateral view.
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Arbacia crassispina, aboral view. Tristan de Cunha main Island (tide pools), Central South Atlantic.
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Arbacia dufresnii (aboral view), Icefish Station 12, Falkland Islands, depth 70 -79 m, southwest Atlantic.
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Arbacia spatuligera (aboral view), collected from Salaverry, Peru, South Pacific Ocean.
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Arbacia spatuligera observed at Cocholgüe (Tomé, Biobío, Chili).
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Arbacia stellata (aboral view), Gulfo de San Miguel, Darien, Panama, eastern Pacific. Source : Echinoderms of Panama (http://echinoderms.lifedesks.org/file-colorboxed/361).
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Arbacia punctulata (aboral view), collected off Georgia, U.S.A., North Atlantic Ocean (031 23 24N, 080 53 06W), from a depth of 17 m. Source : Echinoderms of Panama (http://echinoderms.lifedesks.org/taxonomy/term/15811/media).
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Woods Hole, Massachusetts, United States
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