http://en.wikipedia.org/wiki/Crosierwikipedia wrote:A crosier was also carried on some occasions by the pope, beginning in the early days of the church. This practice was gradually phased out and had disappeared by the time of Innocent III's papacy in the thirteenth century. In the Middle Ages, popes would carry a three-barred cross (one more bar than on those carried before archbishops), in the same manner as other bishops carried a crosier. This was in turn phased out, but Paul VI introduced the modern papal pastoral staff, which instead of the triple cross depicts a modern rendition of the crucified Christ, whose arms are fixed to a crossbar that is curved somewhat in the manner of an Eastern crozier.
This is probably what I'm thinking of: