CHEYENNE, Wyo. (AP) -- Wyoming won't seek an injunction against a new rule limiting the number of snowmobiles entering Yellowstone National Park this winter and next to less than half what had allowed in recent years. Wyoming Attorney General Bruce Salzburg says snowmobile operators around the park are already prepared for the new daily limit of 318 snowmobiles a day. The National Park Service had allowed up to 720 snowmobiles a day into the park over the past five winters but actual use has been far less. A federal appeals court in Denver on Tuesday dismissed one of Wyoming's challenges to the new snowmobile limits at Yellowstone. The court ruled the challenge was pointless because the Park Service already adopted the new rule.