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Eumetazoa (metazoans)
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Class Hydrozoa
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Order Leptothecata
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Family Campanulinidae
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Genus Opercularella
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Species Opercularella belgicae
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Species Opercularella chilensis
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Species Opercularella denticulata
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Species Opercularella humilis
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Species Opercularella lacerata
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Species Opercularella panicula
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Species Opercularella pumila
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Species Opercularella ramosa
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