Order Rodentia

• Thomomys
• Sciurus
• Tamiasciurus
• Tamias
• Glaucomys
• Spermophilus
• Microtus

Thomomys

Mazama pocket gopher (Thomomys mazama) and Camus pocket gopher (T. bulbivorus)

Mazama pocket gopher (Thomomys mazama) and Camus pocket gopher (T. bulbivorus)

Sciurus

Eastern gray squirrel (Sciurus carolinensis) and Western gray squirrel (S. griseus)

Eastern gray squirrel (Sciurus carolinensis) and Western gray squirrel (S. griseus)

Fox squirrel (Sciurus niger)

Tamiasciurus

Douglas squirrel (Tamiasciurus douglasii)

Comparison of Douglas squirrel (Tamiasciurus douglasii) on top with Fox squirrel (Sciurus niger)

Tamias

Townsend’s chipmunk (Tamias townsendii)

Glaucomys

Northern flying squirrel (Glaucomys sabrinus)

Northern flying squirrel (Glaucomys sabrinus)

Spermophilus

California ground squirrel (Spermophilus beecheyi)

Microtus

Townsend’s vole (Microtus townsendii) tray

Oregon vole (Microtus oregoni)

Left to right: Townsend’s vole( Microtus townsendii), Oregon vole (M. oregoni), Gray-tailed vole (M. canicaudus) and Long-tailed bole (M. longicaudus)

Specimens from Oregon State University Mammal Collection. Photographs by Gary Snyder.