found: Chavez, A.S. Evolutionary dynamics of pine squirrels (Tamiasciurus) in western North America, 2013:p. iii (Pine squirrels (Genus: Tamiasciurus)) p. iv (Pine squirrels (also known as tree squirrels))
found: ITIS, Mar. 20, 2020(Tamiasciurus - chickarees, Red Squirrels. Tribe Sciurini - Holarctic tree squirrels, Subfamily Sciurinae, Family Sciuridae - squirrels, marmots, chipmunks)
found: NCBI taxonomy browser, Mar. 20, 2020(Tamiasciurus. Rank: genus. Tribe Tamiasciurini, Subfamily Sciurinae, Family Sciuridae)
found: Mammal species of the world, via WWW, Mar. 20, 2020(Genus Tamiasciurus. Tribe Sciurini, Subfamily Sciurinae, Family Sciuridae)