This site lets visitors 'dissect'
pellets of various owls and other species . . . virtually!
This is Wikipedia's page about pellets.
Hopefully it will be soon expanded upon.
View pics of young students dissecting owl
pellets,
and click a link to hear an amzing Barn Owl call!
This site has nicely laid out pellet
dissection data recording procedures,
along with a link to a downloadable
bone identification chart.