Wyo. Stat. § 36-12-109: Definition.

(a) As used in this act "land" means all land and water within the exterior boundaries of the state of Wyoming except land and water:

(i) To which title is held by a private person or entity;

(ii) To which title was held by the state or a municipality in the state before March 1, 1980;

(iii) Which is controlled by the United States department of defense on March 1, 1980;

(iv) Which was a national park, national monument, land held in trust for Indians, wildlife refuge or wilderness area established prior to January 1, l980.