After McKenna & Bell, 1997
Spermophilus F. Cuvier, 1825
Citellus Oken, 1816
Spermatophilus Wagler, 1830
Mamspermophilus Herrera, 1899
including:
Citillus Lichtenstein, 1827
Otospermophilus Brandt, 1844
Otocolobus Brandt, 1844, non Felis (Otocolobus) Brandt, 1841, a subgenus of cats
Colobotis Brandt, 1844
Colobates Milne-Edwards, 1874 [objective synonym of Colobotis Brandt, 1844]
Ictidomys Allen, 1877
Xerospermophilus Merriam, 1892
Callospermophilus Merriam, 1897
Ictidomoides Mearns, 1907
Urocitellus Obolensky, 1927
Poliocitellus H. Howell, 1938
Notocitellus A.H. Howell, 1938
†Pliocitellus Hibbard, 1942
Reference(s):
- McKenna, M. C. & Bell, S. K., (eds.) 1997: Classification of mammals – above the species level.
–Columbia University Press, New York, 1997, xii-631