Wyo. Stat. § 1-6-107
After filing an action in a court of competent jurisdiction the subject matter of which is the title to real property located in one (1) or more counties in this state, the plaintiff may file a certified copy of the complaint or a sworn notice of the pendency of the action in the office of the county clerk in the county or counties in which the real property is located. The notice shall contain the names of the parties, the object of the action and a description of the property before it shall operate as constructive notice to third parties in such counties. Notice shall be effective in the county where the action is filed without filing a document with the county clerk of that county. Constructive notice shall be effective as to property in the county in which the complaint is filed as of the date the complaint is filed and shall be effective as to property in any other county as of the date on which the notice is filed in the clerk's office of that county.
W.S. 1-6-107