burial items with holes in them where wore for decoration, the items that were "knapped"with chips showing the work were made to sharpen the rock, in this case I suspect 'hide scrappers' to get rid of the fat off the hide to make robes and blankets, neolithic in age,appox 10-20 thousand years ago- good finds be sure to check your state laws for possessing such items, the first rock not sharpened, was more than likely a bone cracker used to get the marrow out of the
bone, the design /i have seen on various items of the Neolithic age, taken from the design of the rattlesnake, today we call it the diamond back rattler~!
rangler