The rodents: the largest order of mammals by species count, defined by a single pair of continuously growing, chisel-like incisors in each jaw, used for gnawing. Rodentia includes mice, rats, squirrels, beavers and porcupines, and its members inhabit nearly every terrestrial habitat on every continent except Antarctica.
Facts
Disputed
Member Species/Taxa CountApproximate described-species (or, for a genus, described-taxon) count; continually revised as species are newly described, reclassified or synonymized. Taxonomic Rank Scientific Name Connections
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Long-Form Articles
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