ATLANTA — Carolina’s bid for an undefeated season ended Sunday when Julio Jones’ dramatic 70-yard touchdown reception powered the Atlanta Falcons to a 20-13 victory over Cam Newton and the Panthers. Carolina (14-1) got the ball with 90 seconds left and no timeouts remaining. Newton completed a 19-yard pass to Corey Brown on first down but fumbled when stripped by Vic Beasley Jr. on the following play.