Here is a list of bone sellers and taxidermists and naturalists and hunters that I purchase from, as a friend was asking me about it.They are all on Etsy.

DesertRoseTaxidermy

GoodTradeKevin

BlackWolfTradingPost

Shadyufo Studios

ladylockscreations

WildThingsInc

CastleBlack

ShopLarkAbout

Cinderalla Pop

BearpawArtsandCrafts

Osteal