Wyo. Stat. § 1-32-207

(a) A person in quiet possession of land or tenement who claims to own the land and who has obtained title to and is in possession of the land without fraud or collusion on his part, shall not be evicted or turned out of possession by any person who proves an adverse and better title until the occupying claimant or his heirs are fully paid the value of all lasting and valuable improvements made on the land by him or by the person under whom he holds, previous to receiving actual notice by the commencement of suit on the adverse claim under which eviction may be effected, unless the occupying claimant refuses to pay to the person proving an adverse and better title the value of the land, without improvements made thereon, upon demand of the successful claimant or his heirs as hereinafter provided:

(i) If the occupying claimant holds a plain and connected title in law or equity, derived from the records of a public office;

(ii) If he holds the same by deed, devise, descent, contract, bond or agreement from and under a person claiming title as aforesaid, derived from the records of a public office, or by deed duly authenticated and recorded;

(iii) If he holds under sale on execution against a person claiming title as aforesaid, derived from the records of a public office, or by deed duly authenticated and recorded;

(iv) If he holds under a sale for taxes authorized by the laws of this state; or

(v) If he holds under a sale and conveyance made by executors, administrators or guardians or by any other person in pursuance of an order of court where lands are or have been directed to be sold.