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Eumetazoa (metazoans)
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Bilateria (bilaterally symmetrical animals)
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Protostomia (protostomes)
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Lophophorates (lophophorates)
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Order Ctenostomata
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Suborder Carnosa2
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Family Flustrellidridae
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Genus Elzerina
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Genus Flustrellidra
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