Ancient, fossilized teeth, uncovered during a decades-long archaeology project in northeastern Ethiopia, indicate that two different kinds of hominins, or human ancestors, lived in the same place ...

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." ...

For decades, paleoanthropologists pointed to tiny grooves between ancient hominin teeth as proof that early humans and ...

Non-masticatory labial striations on human anterior teeth are a form of cultural dental wear well recorded throughout the Pleistocene, which has been interpreted as resulting from the use of the mouth ...