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They were sharply broken and found deeply buried alongside large stones that appeared to have been used as hammers and anvils.
The hunters had killed a Yukon horse and were butchering it using super-sharp stone shards called microblades.As they sliced out the horse’s meaty tongue, the microblades left distinctive cuts in its jaw bone.Millennia later, archaeologist and doctoral candidate Lauriane Bourgeon spotted those marks through her microscope at the University of Montreal and added the fragment of ancient jaw bone to her small selection of samples for radiocarbon dating.A Triceratops brow horn discovered in Dawson County, Montana, has been controversially dated to around 33,500 years, challenging the view that dinosaurs died out around 65 million years ago.
The finding radically suggests that early humans may have once walked the earth with the fearsome reptiles thousands of years ago.
The bones came from excavations led by archaeologist Jacques Cinq-Mars between 19 and have been in storage at the Canadian Museum of History in Gatineau, Quebec. Bourgeon sent six pieces of bone that showed evidence of stone-tool cuts to a lab in Oxford, England, for radiocarbon dating.