Oracle bones were used for carving out pictures of big animals or things like turtle shells and elephants. They were mostly used by the Shang Dynasty.
The Shang Dynasty also used them for some of their rituals. Oracle bones are artifacts that the Shang Dynasty are known for using.
They were also used for fortune telling. Oracle bones were also used in China. The oracle bones used in China were much older than the ones the Shang Dynasty used.
Some of the oracle bones archeaoligists found proved that the shang dynasty existed. They helped prove their existance because of the oracle bones and bronze