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Eumetazoa (metazoans)
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Bilateria (bilaterally symmetrical animals)
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Protostomia (protostomes)
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Platyhelminthes (flatworms)
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Class Trematoda
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Order Strigeatida
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Family Spirorchiidae
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Genus Amphiorchis
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Genus Carettacola
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Genus Diarmostorchis
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Genus Haemoxenicon
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Genus Hapalorhynchus
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Genus Hapalotrema
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Genus Learedius
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Genus Monticellius
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Genus Neospirorchis
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Genus Spirorchis
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Genus Unicaecum
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Genus Vasotrema
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