Wyo. Stat. Ann. § 31-2-405
(a) Except as provided in W.S. 31-2-410, resident snowmobile registration fees shall be paid before the expiration of thirty (30) days after acquiring ownership of a snowmobile which will be operated within the state of Wyoming. Upon receipt of the registration fee the selling agent shall issue to the owner for each snowmobile a certificate of registration, setting forth the facts in the application, together with a numbered decal which shall bear a distinctive number assigned to the snowmobile and the date of expiration, which decal shall at all times be prominently displayed on the snowmobile.
(b) Repealed By Laws 2014, Ch. 30, § 2.