Final answer:
Upper Paleolithic innovations included the creation of more efficient blade tools, specialized tools like the burin within various tool industries, and the development of advanced hunting equipment such as the atlatl.
Step-by-step explanation:
Three traits of Upper Paleolithic technological innovation include the development of blade tools, the creation of specific tool industries like the Aurignacian and the Solutrean, and the introduction of tools that exploited new materials and techniques such as the atlatl. First, the transition to a blade tool industry represented a significant advancement, with tools that were long, thin, flat, and featured a sharp edge, thus providing a much longer cutting edge than the earlier flake tools. Second, within the blade tool industry, there were various distinctive tool industries that developed over time, each with their unique characteristics and specialized tools, like the burin which was crucial for working bone materials. Lastly, the Upper Paleolithic period saw the introduction of the atlatl, an innovative hunting tool that increased the range and power of spears, evidencing not just improvements in crafting techniques but also in hunting strategies.