I thought this was a pretty good description of his crosier and its meaning.
The crosier is a bishops pastoral staff. Symbolic of the shepherds crook, it symbolizes a bishops role as caretaker of the flock and shows his authority and jurisdiction. In the crook of Bishop Rhoades crosier is depicted the Lamb of God atop the Book of the Seven Seals as described in the Book of Revelation. This image of the Eucharistic Sacrifice commemorates Bishop Rhoades ordination to the Episcopacy during the Year of the Eucharist.
The crosier is a bishops pastoral staff. Symbolic of the shepherds crook, it symbolizes a bishops role as caretaker of the flock and shows his authority and jurisdiction. In the crook of Bishop Rhoades crosier is depicted the Lamb of God atop the Book of the Seven Seals as described in the Book of Revelation. This image of the Eucharistic Sacrifice commemorates Bishop Rhoades ordination to the Episcopacy during the Year of the Eucharist.