Relating to the earliest period of human stone tool use, or describing tools that might date to this period but whose authenticity is debated.
From Greek 'eos' (dawn, early) + 'lithos' (stone) + '-ic' suffix. The term emerged in late 19th-century archaeology as researchers tried to categorize the very oldest human implements.
Scientists can't always agree on whether something is a tool or just a rock—which shows how careful archaeologists have to be about claiming something proves human behavior from hundreds of thousands of years ago!
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