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Prehistoric refers to the time before the existence of written or recorded history. Petroglyphs can be carvings or engravings in rocks or caves. Pictographs used to refer to sketches and paintings that usually depict nature.
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Plan projects on a visual timeline
Map milestones, phases, deadlines, and key events in one place so the sequence is easier to see and share. Timetoast is a timeline maker for work, school, research, and stories.