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Eumetazoa (metazoans)
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Bilateria (bilaterally symmetrical animals)
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Protostomia (protostomes)
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Arthropoda (arthropods)
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Crustacea (shrimps, crabs, lobsters, water fleas, and relatives)
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Class Maxillopoda
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Order Monstrilloida
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Family Monstrillidae
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Genus Monstrilla
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Species Monstrilla anglica
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Species Monstrilla canadensis
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Species Monstrilla conjunctiva
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Species Monstrilla filogranarum
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Species Monstrilla floridana
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Species Monstrilla gracilicauda
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Species Monstrilla grandis
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Species Monstrilla helgolandica
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Species Monstrilla longicornis
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Species Monstrilla longiremis
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Species Monstrilla minuta
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Species Monstrilla nasuta
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Species Monstrilla roscovita
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Species Monstrilla rugosa
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Species Monstrilla serricornis
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Species Monstrilla spinosa
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Species Monstrilla wandelii
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