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Kingdom Animalia (animals)
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Eumetazoa (metazoans)-
Bilateria (bilaterally symmetrical animals)
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Deuterostomia (deuterostomes)
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Phylum Chordata (chordates)
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Craniata (craniates)
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Subphylum Vertebrata (vertebrates)
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Superclass Gnathostomata (jawed vertebrates)
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Euteleostomi (bony vertebrates)
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Class Sarcopterygii (lobe-finned fishes and terrestrial vertebrates)
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Tetrapoda (tetrapods)
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Amniota (amniotes)
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Synapsida (synapsids)
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Class Mammalia (mammals)
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Subclass Theria (Therian mammals)
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Infraclass Eutheria (placental mammals)
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Order Soricomorpha (insectivores)-
Family Soricidae (shrews)
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Subfamily Soricinae (red-toothed shrews)
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Tribe Notiosoricini (North American gray shrews)-
Genus Notiosorex (desert shrew)
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Species Notiosorex cockrumi (Cockrum's gray shrew) -
Species Notiosorex crawfordi (desert shrew)
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Species Notiosorex evotis (large-eared gray shrew)
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Species Notiosorex villai (Villa's gray shrew)
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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.
