Source : Webster's Revised Unabridged Dictionary (1913)

Sciuromorpha \Sci`u*ro*mor"pha\, n. pl. [NL., fr. L. sciurus
   squirrel + Gr. morfh` form.] (Zo["o]l.)
   A tribe of rodents containing the squirrels and allied
   animals, such as the gophers, woodchucks, beavers, and
   others.

Source : WordNet®

Sciuromorpha
     n : large more or less primitive rodents: squirrels; marmots;
         gophers; beavers; etc. [syn: {suborder Sciuromorpha}]