The Great Plains skink (Plestiodon obsoletus)[2] is a species of lizard endemic to North America.

This lizard is light gray or beige in color; its dorsal scales have black or dark brown edges.

Juveniles are black with white sports on the lips and the head and have a blue or bluish tail.

[3] The Great Plains skink is very common on the Great Plains, ranging from southeastern Wyoming and Nebraska (and also Fremont County, Iowa) southward to eastern Arizona, New Mexico, Texas, and into Mexico.

[3] This skink lives in open plains habitat or the eastern foothills of the Rocky Mountains, in areas near water, e.g. irrigation ditches.