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Porifera (sponges)
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Class Demospongiae
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Order Haplosclerida
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Family Niphatidae
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Genus Pachychalina
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Species Pachychalina acapulcensis
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Species Pachychalina alcaloidifera
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Species Pachychalina alveopora
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Species Pachychalina arctica
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Species Pachychalina fracta
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Species Pachychalina glacialis
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Species Pachychalina gracilenta
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Species Pachychalina gracilis
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Species Pachychalina rustica
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Species Pachychalina schmidti
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Species Pachychalina subcapitata
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