Wyo. Stat. § 2-9-203

(a) Upon hearing, if it appears to the court that more than two (2) years have elapsed since the death of the deceased, that he died seized of an interest in lands in this state or that he died intestate having entered government lands and not having received a patent therefor, and there has been no previous record judicial determination of the decedent's heirs or the right of descent of the real property interest, the court shall determine the date of the decedent's death, who were the heirs of the deceased upon the date of death, their degree of kinship, the right of descent of the real property or interest therein of which the deceased died seized or on which he had made an entry but had not yet received a patent therefor and the distribution each heir is entitled to receive from the known and unknown real property interests of the decedent based on the determination of the right of descent, and shall make and enter its decree accordingly.

(b) The findings of the court relating to a decedent's date of death, intestacy, heirs, degree of kinship and right of descent shall apply to any other real property in this state subsequently discovered in which the decedent had a property interest at the time of his death as identified by an affidavit recorded pursuant to W.S. 34-11-101 , provided that:

(i) A copy of the judicial determination of the decedent's heirs or right of descent shall be included with an affidavit filed under W.S. 34-11-101 for the subsequently discovered property;

(ii) No other recorded judicial determination has been made relating to the right of descent for that property.