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Aboral and oral surface of Sculpsitechinus tenuissimus, California Academy of Sciences (CASIZ 112664), Kakeroma Island, Ryukyu Islands, Japan.
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Aboral and oral view of a naked Echinodiscus truncatus), from Bali, Indonesia (Museum of Toulouse, France). Width : 7 cm. Author : Didier Descouens (https://commons.wikimedia.org/wiki/User:Archaeodontosaurus). (probably misidentified as Sculpsitechinus tenuissimus)
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Preserved specimen of Tylocidaris ohshimai from MNHN, probably found around Philippines.
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Lanthonia longifissa (previously known as Mellita longifissa) from Punta Chame, Panama, eastern Pacific. ID & Photographer : Simon E. Coppard (http://echinoderms.lifedesks.org/gallery?page=10).
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Lanthonia longifissa, aboral view of denuded test. Punta Chame, Panama, eastern Pacific. Source : Echinoderms of Panama (http://echinoderms.lifedesks.org/file-colorboxed/185).
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Lanthonia grantii, aboral view of denuded test. Golfo de San Miguel, Darien, Panama, eastern Pacific. Source : Echinoderms of Panama (http://echinoderms.lifedesks.org/file-colorboxed/367).
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