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1 Tree was published in this study

Historical biogeography and body form evolution of ground squirrels (Sciuridae: Xerinae)
Ge, " Liu", " Lv", " Zhan", " Xia", " Yang". (2013). EVOLUTIONARY BIOLOGY.
Cynomys gunnisoni Cynomys leucurus Cynomys parvidens Cynomys mexicanus Cynomys ludovicianus Xerospermophilus perotensis Xerospermophilus spilosoma Xerospermophilus tereticaudus Xerospermophilus mohavensis Poliocitellus franklinii Ictidomys mexicanus Ictidomys tridecemlineatus Urocitellus richardsonii Urocitellus elegans Urocitellus parryii Urocitellus beldingi Urocitellus armatus Urocitellus columbianus Urocitellus undulatus Urocitellus washingtoni Urocitellus brunneus Urocitellus townsendii Spermophilus alashanicus Spermophilus pallidicauda Spermophilus relictus Spermophilus fulvus Spermophilus erythrogenys Spermophilus suslicus Spermophilus xanthoprymnus Spermophilus dauricus Spermophilus citellus Spermophilus major Spermophilus pygmaeus Spermophilus musicus Marmota sibirica Marmota himalayana Marmota camtschatica Marmota baibacina Marmota bobak Marmota monax Marmota caudata Marmota menzbieri Marmota broweri Marmota marmota Marmota olympus Marmota vancouverensis Marmota caligata Marmota flaviventris Callospermophilus lateralis Callospermophilus madrensis Callospermophilus saturatus Otospermophilus beecheyi Otospermophilus atricapillus Otospermophilus variegatus Ammospermophilus interpres Ammospermophilus leucurus Ammospermophilus harrisii Notocitellus annulatus Notocitellus adocetus Tamias umbrinus Tamias palmeri Tamias cinereicollis Tamias quadrivittatus Tamias dorsalis Tamias rufus Tamias bulleri Tamias canipes Tamias durangae Tamias alpinus Tamias panamintinus Tamias speciosus Tamias minimus Tamias quadrimaculatus Tamias ruficaudus Tamias sonomae Tamias siskiyou Tamias townsendii Tamias ochrogenys Tamias senex Tamias amoenus Tamias merriami Tamias obscurus Tamias striatus Tamias sibiricus Paraxerus cepapi Sciurotamias davidianus Xerus inauris Xerus princeps Xerus rutilus Xerus erythropus Spermophilopsis leptodactylus Petinomys setosus Hylopetes lepidus Glaucomys volans Eoglaucomys fimbriatus Belomys pearsonii Petaurista philippensis Pteromys volans Tamiasciurus hudsonicus Sciurus vulgaris Sundasciurus mindanensis Callosciurus prevostii Dremomys pernyi Tamiops swinhoei Aplodontia rufa
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