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Biota (Life)
Eukaryote (Eukarya)
Podiata
Unikont (Unikonta)
Opisthokont (Opisthokonta)
Holozoa
Filozoa
Apoikozoa (Choanozoa)
Animal (Animalia)
Metazoa
Epitheliozoa
Eumetazoa
Bilateria
Deuterostome (Deuterostomia)
Chordata (Chordates)
Olfactores
Craniata (Craniata (chordata))
Vertebrata (Animals with backbone)
Gnathostomata (Gnathostome)
Eugnathostomata
Teleostomi
Euteleostomi
Sarcopterygii (Lobe-finned fishes)
Dipnotetrapodomorpha
Tetrapodomorpha (Tetrapodomorph)
Tetrapoda (Tetrapod)
Reptiliomorpha
Amniota (Amniote)
Synapsidomorpha
Synapsid (Synapsida)
Eupelycosauria
Sphenacodontia
Sphenacodontoidea
Therapsida (Therapsid)
Neotherapsida
Theriodont (Theriodontia)
Eutheriodontia
Cynodontia (Cynodont)
Epicynodontia
Eucynodontia
Probainognathia
Chiniquodontoidea
Prozostrodontia
Mammaliaformes
Mammal (Mammals)
Theriamorpha
Theriiformes
Holotheria
Trechnotheria
Cladotheria
Zatheria
Boreosphenida
Theria (Therians)
Eutheria
Placentalia (Eutheria)
Exafroplacentalia
Boreoeutheria
Euarchontoglires
Gliriformes
Glires
Rodentia (Rodents)
Sciuromorpha
Squirrel (Squirrel family)
Sciurinae
Sciurini

Pine squirrel (935907)

Children (4 direct children, 36 direct and indirect children):

American red squirrel (tree size 25)
American red sqirrel

Douglas squirrel (tree size 3)
Douglas’s squirrel

Mearns's squirrel
Mearns’s squirrel

Fremont's squirrel (tree size 4)
Tamiasciurus fremonti