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| Keywords: Ears of ground squirrels of California f. 01.png en Ears of ground squirrels to show characters of size and shape in different species a California Ground Squirrel Spermophilus beecheyi beecheyi ; b Fisher Ground Squirrel Spermophilus beecheyi fisheri ; c Oregon Ground Squirrel Spermophilus beldingi oregonus ; d Stephens Soft-haired Ground Squirrel Spermophilus mollis stephensi ; e Mohave Ground Squirrel Spermophilus mohavensis ; Yuma Round-tailed Ground Squirrel Spermophilus tereticaudus tereticaudus ; g Sierra Golden-mantled Ground Squirrel Callospermophilus lateralis chrysodeirus ; h Desert Antelope Ground Squirrel Ammospermophilus leucurus leucurus All natural size and drawn direct from specimens Note a and b are extreme examples ; the average difference existing between the California and the Fisher ground squirrels is much less; individuals of each race can be found which will overlap some individuals of the other in size and shape 1918 Joseph Grinnell and Joseph Dixon Natural History of the Ground Squirrels of California 1918 <br> 100px 15 Joseph Grinnell and Joseph Dixon other versions PD-old-70-1923 Natural History of the Ground Squirrels of California Otospermophilus beecheyi Spermophilus beldingi Sciuridae heads Spermophilus mollis Ammospermophilus leucurus Spermophilus mohavensis Spermophilus tereticaudus Rodentia ears | ||||
