Chris Schram has interpreted this as a worked piece of petrified wood in a representation of the body of the Wood Bison. It was found in the context of many petrified wood portable rock art objects. While researching bison, Chris came upon the Wood Bison and noticed it had a prominent vertical hump above the shoulders and a straight, sloping, back strikingly similar to the one seen on the figure stone.
cave at Lascaux, France, shows a man with a bird head, a speared bison with its intestines drooping to the ground and a bird on what appears to be a staff. The bison, bird and human combination is likely not a coincidence and probably reflects a related symbol system between North America and Europe.