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Spermophilus citelloides, sometimes called the Pannonian souslik, [1] is an extinct species of ground squirrel in the squirrel family . It was distributed in Central and Eastern Europe from the middle Pleistocene ( Holsteinian ) to the early Holocene .
Spermophilus is a genus of ground squirrels in the squirrel family. [1] As traditionally defined the genus was very species-rich, ranging through Europe, Asia and North America, but this arrangement was found to be paraphyletic to the certainly distinct prairie dogs , marmots , and antelope squirrels .
The European ground squirrel (Spermophilus citellus), also known as the European souslik, is a species from the squirrel family, Sciuridae. [2] It is among the few European species in the genus Spermophilus. Like all squirrels, it is a member of the rodent order.
The red-cheeked ground squirrel (Spermophilus erythrogenys) is a species of rodent in the family Sciuridae. It is commonly referred to as the red-cheeked ground souslik and there are several recognized subspecies. [ 2 ]
This species has usually been placed in the genus Spermophilus with about 40 other species. As this large genus is paraphyletic to prairie dogs, marmots, and antelope squirrels, Kristofer Helgen and colleagues have split it into eight genera, placing the thirteen-lined ground squirrel in Ictidomys with two other species. [3]
The yellow ground squirrel (Spermophilus fulvus) is a large and sturdy ground squirrel species native to Afghanistan, China, Iran, Kazakhstan, Turkmenistan, Uzbekistan and Russia. It inhabits sandy steppes with Artemisia, glasswort and tamarisk. [1] The yellow ground squirrel has naked soles on the hind feet excluding heels.
The little ground squirrel or little souslik, (Spermophilus pygmaeus) is a species of rodent in the family Sciuridae.It is found from Eastern Europe to Central Asia. [1]Its subspecies include Spermophilus pygmaeus pygmaeus, Spermophilus pygmaeus brauneri, Spermophilus pygmaeus herbicolus and Spermophilus pygmaeus mugosaricus. [2]
Most round-tailed ground squirrels are very small. Weight at birth is approximately 3.9 grams (0.14 oz). Adults weigh around 125 grams (4.4 oz). [2] All have a long round tail and long, hairy hind feet. They have no fur markings, instead having a uniform sandy color, which matches the soil they burrow in.