Ammospermophilus (antelope-squirrels) (1)
Biswamoyopterus (Namdapha flying squirrel) (1)
Cynomys (prairie dogs) (2)
Eupetaurus (woolly flying squirrel) (1)
Hylopetes (pygmy flying squirrels) (1)
Iomys (Javanese flying squirrel and Mentawi flying squirrel) (1)
Marmota (marmots) (2)
Paraxerus (African bush squirrels) (1)
Prosciurillus (dwarf squirrels and Sulawesi tree squirrels) (1)
Pteromyscus (smoky flying squirrel) (1)
Spermophilus (ground squirrels and rock squirrels) (1)
Tamias (chipmunks) (1)
Tamiasciurus (American red squirrels and chickarees) (1)
Urocitellus (1)
Xerospermophilus (1)

(...) = Species count