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'Toothpick grooves' in ancient fossil human teeth may not be from toothpicks after all

For decades, small grooves on ancient human teeth were thought to be evidence of deliberate tool use—people cleaning their teeth with sticks or fibers, or easing gum pain with makeshift "toothpicks." ...
The Conversation

‘Toothpick grooves’ in ancient fossil human teeth may not be from toothpicks after all

Ian Towle receives funding from the Australian Research Council (ARC DP240101081). Luca Fiorenza receives funding from the Australian Research Council (ARC DP240101081). For decades, small grooves on ...