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Rodentia

Rodents
Temporal range: 56–0 Ma
Late PaleoceneHolocene
Rodent collage.jpg
Clockwise from top left: capybara, springhare, golden-mantled ground squirrel, house mouse and beaver representing the suborders Hystricomorpha, Anomaluromorpha, Sciuromorpha, Myomorpha, and Castorimorpha, respectively.
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
(unranked): Glires
Order: Rodentia
Bowdich, 1821
Suborders

Anomaluromorpha
Castorimorpha
Hystricomorpha (inc. Caviomorpha)
Myomorpha
Sciuromorpha

Rodent range.png
Combined range of all rodent species (not including introduced populations)

Anomaluromorpha
Castorimorpha
Hystricomorpha (inc. Caviomorpha)
Myomorpha
Sciuromorpha

Rodents (from Latin rodere, "to gnaw") are mammals of the order Rodentia, which are characterized by a single pair of continuously growing incisors in each of the upper and lower jaws. About 40% of all mammal species are rodents; they are found in vast numbers on all continents except Antarctica. They are the most diversified mammalian order and live in a variety of terrestrial habitats, including human-made environments.

Species can be arboreal, fossorial (burrowing), or semiaquatic. Well-known rodents include mice, rats, squirrels, prairie dogs, porcupines, beavers, guinea pigs, hamsters, gerbils and capybaras. Other animals such as rabbits, hares, and pikas, whose incisors also grow continually, were once included with them, but are now considered to be in a separate order, the Lagomorpha. Nonetheless, Rodentia and Lagomorpha are sister groups, sharing a most recent common ancestor and forming the clade of Glires.


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Wikipedia

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