(a) No horse shall be permitted to start that has not been fully identified by the Official identifier. The trainer is responsible for the identification.
(b) It shall be the duty of the Official Identifier to check all contestants for each and every race and to have all horses properly identified, keeping a record on solid colored horses and horses starting for the first time according to the published record of the "Chart Books" of the Daily Racing Form. This record is to be retained by the Racing Secretary.
038-5 Wyo. Code R. § 5-6