[shotgun]

Same with the estimated 40,000 000 buffalo. But we never see the piles of bones from those.

[Wissa]

Same with the estimated 40,000 000 buffalo. But we never see the piles of bones from those.

Buffalo bones were gathered up and sold. They were shipped east where they were put to various uses.

[piasa]

No shortage of pictures of buffalo bone piles/hide piles out there. Bison bone sold for up to $15 a ton and was useful for many purposes.

http://scribol.com/anthropology-and-history/history/the-near-annihilation-of-americas-buffalo-in-pictures/