The bow and arrow had not yet been invented on the plains so spear hunting was widely used especially the atlatl. The amount of points found and in such concentrations it is easy to believe that groups of people were now larger or coming together to form large groups for the plentiful summer months.
Points from the different traditions like the Oxbow, Pelican Lake or McKean-Duncan Complex show a variety of new forms from the older lanceolate type points. These new atlatl points are smaller in size and have in some cases notched edges for hafting to spears. These tiny points show a new skill requirement and a commitment that would have taken years to master.