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Porifera (sponges)
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Class Hexactinellida
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Order Lyssacinosida
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Family Euplectellidae
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Genus Holascus
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Species Holascus ancoratus
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Species Holascus belyaevi
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Species Holascus edwardsi
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Species Holascus euonyx
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Species Holascus fibulatus
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Species Holascus obesus
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Species Holascus polejaevi
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Species Holascus pseudostellatus
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Species Holascus ridleyi
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Species Holascus robustus
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Species Holascus stellatus
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Species Holascus taraxacum
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Species Holascus tener
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Species Holascus tenuis
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Species Holascus undulatus
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