Dragon bones being an item that is dropped by all dragons other than Frost dragons and can be used to level up Prayer. This type of bone is the middle tier of dragon bones and offers mediocre experience per action compared to the other bones. This bone, just like the others, can be buried, used on an altar, or be made into Bonemeal.

Method Sir Lord Legends Extreme
Bury  72
Altar 252
Bonemeal 360
Bonecrusher 252