"...Dyuktai Cave (14-13,000 rcybp) on the Aldan River, Siberia, is interesting because of the discovery of bifacial projectile points, oval and triangular knives, discoidal, Levallois, wedge-shaped cores, multifaceted burins, large side scrapers, small end scrappers on blades, and retouched flakes. These artifacts are associated with large animals, including mammoth"....
This is very interesting. As a youth, I and my friends collected such things out of corn and tobacco fields in Clark County, KY.
As a youth, I always looked everywhere for 'Indian arrowheads', to this day I haven't found a one. I did find a 10 million years old petrified shark tooth in the marshes around Charleston once.