I believe many natural stones were collected and used as tools in this area and time period because they didn't use the "pecking" method, that came later when a later people came and found the artifacts which were natural rock tools and learned to mimic their shapes with the various forming methods they had already been using, which is why I lean towards Paleo. I look for signs of use and chipping or wear from being bound which it shows both. What better to smash stuff with than a piece of preformed bedrock? Native americans always got their ideas from natural earth occurrences and formations.
