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Kingdom Animalia (animals)
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Eumetazoa (metazoans)
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Bilateria (bilaterally symmetrical animals)
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Protostomia (protostomes)
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Class Bivalvia
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Order Unionoida
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Family Unionidae
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Genus Quadrula
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Species Quadrula apiculata -



Species Quadrula asperata -



Species Quadrula aurea -



Species Quadrula couchiana -



Species Quadrula cylindrica -



Species Quadrula fragosa -



Species Quadrula houstonensis -



Species Quadrula intermedia -



Species Quadrula metanevra -



Species Quadrula nodulata -



Species Quadrula petrina -
Species Quadrula pustulosa
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Species Quadrula quadrula
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Species Quadrula refulgens -



Species Quadrula rumphiana -



Species Quadrula sparsa -



Species Quadrula stapes -



Species Quadrula tuberosa
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Confused by a class within a class or an order within an order? Please see our brief essay.
Scientific names for Aves taxonomy (family and below) are from The Howard and Moore Complete Checklist of the Birds of the World, Princeton University Press, copyright 2003. Used by permission.



