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Xerinae

From Wikipedia, the free encyclopedia

Xerinae
South African ground squirrel (Xerus inauris)
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Rodentia
Family: Sciuridae
Subfamily: Xerinae
Osborn, 1910
Tribes and genera

Xerini

Atlantoxerus
Euxerus
Geosciurus
Spermophilopsis
Xerus

Protoxerini

Epixerus
Funisciurus
Heliosciurus
Myosciurus
Paraxerus
Protoxerus

Marmotini

Ammospermophilus
Callospermophilus
Cynomys
Eutamias
Ictidomys
Marmota
Neotamias
Notocitellus
Otospermophilus
Poliocitellus
Sciurotamias
Spermophilus
Tamias
Urocitellus
Xerospermophilus

The Xerinae comprise a subfamily of squirrels, many of which are highly terrestrial. It includes the tribes Marmotini (marmots, chipmunks, prairie dogs, and other Holarctic ground squirrels), Xerini (African and some Eurasian ground squirrels), and Protoxerini (African tree squirrels).[1]

The Xerinae first originated in Eurasia but later dispersed to other parts of the world. One of which was Africa, where they traveled via land bridges in the Miocene period, leading to the emergence of Protoxerini and Xerini ground squirrel tribes. Many Xerinae also dispersed to North America during the early Oligocene era, and with the help of global cooling and the expansion of grasslands, resulted in the emergence of the Marmotini ground squirrel tribe.[2]

Taxonomy

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Tribe Xerini six species of ground squirrels in five genera, occurring in Africa and Asia.

Atlantoxerus
Euxerus
Geosciurus
Spermophilopsis
Xerus

Tribe Protoxerini thirty species of tree squirrels in six genera, occurring in Africa.

Epixerus
Funisciurus
Heliosciurus
Myosciurus
Paraxerus
Protoxerus

Tribe Marmotini ground squirrels in fifteen genera, occurring world wide. Includes the prairie dogs, the marmots (including woodchuck), and chipmunks.

Ammospermophilus
Callospermophilus
Cynomys
Eutamias
Ictidomys
Marmota
Neotamias
Notocitellus
Otospermophilus
Poliocitellus
Sciurotamias
Spermophilus
Tamias
Urocitellus
Xerospermophilus

References

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  1. ^ Thorington, R. W. and R. S. Hoffmann (2005). "Family Sciuridae". pp. 754–818 in Wilson, E. D. and Reeder, D. M. (eds.), Mammal Species of the World: A Taxonomic and Geographic Reference, Vol. 2. Johns Hopkins University Press, Baltimore.
  2. ^ Ge, D. Y.; Liu, X.; Lv, X. F.; Zhang, Z. Q.; Xia, L.; Yang, Q. S. (2014). "Historical Biogeography and Body Form Evolution of Ground Squirrels (Sciuridae: Xerinae)". Evolutionary Biology. 41 (1): 99–114. Bibcode:2014EvBio..41...99G. doi:10.1007/s11692-013-9250-7.