Wyo. Stat. § 2-6-302: Summons and notification; proceedings governed by civil rules.

Upon filing the petition, a summons shall be served upon the executors of the will and the clerk shall send notice by certified mail, with copy of petition attached, to all the legatees and devisees mentioned in the will and all the heirs, so far as known to the petitioner, or to their guardians if any of them are minors, or to their personal representatives if any of them are dead. The summons, service and proceedings shall be governed by the Wyoming Rules of Civil Procedure.