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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 Rodentia (rodents)
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Suborder Sciuromorpha (squirrels, dormice, and relatives)
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Family Sciuridae (squirrels)
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Subfamily Xerinae (marmots, ground squirrels, African squirrels, and relatives)-
Tribe Marmotini (marmots, chipmunks, ground squirrels, and relatives)
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Genus Spermophilus (ground squirrels and rock squirrels)
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Species Spermophilus adocetus (tropical ground squirrel) -
Species Spermophilus alashanicus (Alashan ground squirrel)
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Species Spermophilus annulatus (ring-tailed ground squirrel)
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Species Spermophilus armatus (Uinta ground squirrel)
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Species Spermophilus atricapillus (Baja California rock squirrel)
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Species Spermophilus beecheyi (California ground squirrel)
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Species Spermophilus beldingi (Belding's ground squirrel)
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Species Spermophilus brevicauda (Brandt's ground squirrel)
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Species Spermophilus brunneus (Idaho ground squirrel)
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Species Spermophilus canus (Merriam's ground squirrel)
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Species Spermophilus citellus (European ground squirrel)
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Species Spermophilus columbianus (Columbian ground squirrel)
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Species Spermophilus dauricus (Daurian ground squirrel)
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Species Spermophilus elegans (Wyoming ground squirrel)
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Species Spermophilus erythrogenys (red-cheeked ground squirrel)
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Species Spermophilus franklinii (Franklin's ground squirrel)
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Species Spermophilus fulvus (yellow ground squirrel)
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Species Spermophilus lateralis (golden-mantled ground squirrel)
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Species Spermophilus madrensis (Sierra Madre ground squirrel)
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Species Spermophilus major (russet ground squirrel)
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Species Spermophilus mexicanus (Mexican ground squirrel)
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Species Spermophilus mohavensis (Mohave ground squirrel)
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Species Spermophilus mollis (Piute ground squirrel)
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Species Spermophilus musicus (Caucasian mountain ground squirrel)
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Species Spermophilus pallidicauda (pallid ground squirrel)
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Species Spermophilus parryii (Arctic ground squirrel)
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Species Spermophilus perotensis (Perote ground squirrel)
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Species Spermophilus pygmaeus (little ground squirrel)
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Species Spermophilus ralli (Tien Shan ground squirrel)
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Species Spermophilus relictus (Tien Shan ground squirrel)
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Species Spermophilus richardsonii (Richardson's ground squirrel)
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Species Spermophilus saturatus (Cascade golden-mantled ground squirrel)
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Species Spermophilus spilosoma (spotted ground squirrel)
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Species Spermophilus suslicus (speckled ground squirrel)
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Species Spermophilus tereticaudus (round-tailed ground squirrel)
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Species Spermophilus townsendii (Townsend's ground squirrel)
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Species Spermophilus tridecemlineatus (thirteen-lined ground squirrel)
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Species Spermophilus undulatus (long-tailed ground squirrel)
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Species Spermophilus variegatus (rock squirrel)
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Species Spermophilus washingtoni (Washington ground squirrel)
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Species Spermophilus xanthoprymnus (Asia Minor ground squirrel)
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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.
