Ancient mammoth bones marked by human butchering have been found in Michigan, shedding new light on the timeline of human presence in the state. The discovery was made in 2015, when soybean farmer James Bristle found an enormous rib bone on his farm just outside Chelsea. When paleontologists from the University of Michigan came to investigate, they found the skull and bones of … [Read more...] about Ancient Mammoth Bones Found in Michigan Suggest Human Butchering and Reveal New Insights into Early History