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Porifera (sponges)
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Class Demospongiae
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Order Lithistida
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Family Siphonidiidae
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Genus Siphonidium
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Species Siphonidium capitatum
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Species Siphonidium dendyi
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Species Siphonidium dubium
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Species Siphonidium geminum
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Species Siphonidium ramosum
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