211-7 Wyo. Code R. § 7-25
(a) A petitioner or assessor may appeal a final adverse written decision or order of a county board to the Wyoming State Board of Equalization (state board) by filing a notice of appeal pursuant to the rules of the state board within thirty (30) days from the entry of the county board decision.
(b) If a timely notice of appeal is filed by a party, any other party may file a notice of appeal within fifteen (15) days of the date on which the first notice of appeal was filed, or within the time otherwise prescribed herein, whichever period last expires.
(c) The notice of appeal shall be considered filed with the state board on mailing as evidenced by a postmark, or upon receipt by fax or other electronic transmission approved by the state board.
(d) A copy of the notice of appeal shall be served on the county board and the other parties.
211-7 Wyo. Code R. § 7-25
Adopted, Eff. 7/13/2015.