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Eumetazoa (metazoans)
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Bilateria (bilaterally symmetrical animals)
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Protostomia (protostomes)
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Mollusca (clams, snails, squids, and relatives)
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Class Bivalvia
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Order Nuculoida
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Family Yoldiidae
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Genus Portlandia
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Species Portlandia aestuariorum
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Species Portlandia arctica
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Species Portlandia beringii
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Species Portlandia fraterna
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Species Portlandia frigida
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Species Portlandia glacialis
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Species Portlandia inconspicua
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Species Portlandia inflata
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Species Portlandia intermedia
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Species Portlandia iris
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Species Portlandia jeffreysi
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Species Portlandia lenticula
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Species Portlandia lucida
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Species Portlandia minuscula
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Species Portlandia sericea
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Species Portlandia subangulata
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Species Portlandia tamara
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