A crosier (or bishop's staff) is a stylized staff carried by high-ranking Roman Catholic prelates. The crosier is the symbol of the governing office of a bishop or Apostle. Popes carried a crosier at times in the first centuries of the church. This practice was phased out and disappeared by the time of Pope Innocent III in the thirteenth century. Pope Paul VI introduced the modern papal pastoral staff, the papal ferula, in 1965. He and his successors have carried a few versions of this staff, but never a crosier.