Muroidea

Muroids Temporal range: Middle Eocene - Recent
Microtus arvalis
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Rodentia
Suborder:	Myomorpha
Superfamily:	Muroidea Illiger, 1811
Families
Platacanthomyidae Spalacidae Calomyscidae Nesomyidae Cricetidae Muridae

Muroidea is a large superfamily of rodents. It includes hamsters, gerbils, true mice and rats, and many other relatives. They live on almost every continent except Antarctica. Some scientists have placed all members of this group into a single family, Muridae. Sometimes there are difficulties in knowing how the subfamilies are related to one another.

The muroids are classified in 6 families, 19 subfamilies, around 280 genera and at least 1300 species.