Lagemorpha n. pl. : A group of rodents, including the hares. They have four incisors in the upper jaw. Called also Duplicidentata.

Example:


Taxonomy
Genus, rodents, lagomorphs, pikas, order Lagomorpha, free encyclopedia, Infraclass, Kingdom Animalia, Phylum Chordata, Family Ochotonidae, Family Leporidae, late Paleocene, Superorder, eNature, Ochotona princeps, eastern Asia, Genus Ochotona, Genus Lepus.

Defination from the web:
Lagomorpha, of which there are two families, the Leporidae (hares and rabbits), and the Ochotonidae (pikas) ... · Rodentia (Rodents) · Lagomorpha (Rabbits and relatives) · Erinaceomorpha (Hedgehogs and relatives) · Soricomorpha ...