Check the listing for details. Fossilized Bison Bones. Condition: New. Listed at 54.00 USD. The product is a pair of fossilized bison bones, likely from a prehistoric mammal such as the American bison. These bones would be considered valuable collectibles for those interested in rocks, fossils, and minerals, specifically in the category of vertebrates. The fossilization process has preserved these bones over time, making them a unique and historical artifact for collectors or enthusiasts of ancient mammals. Found in south Texas.