Did early hominins use toothpicks?

Researchers say they've found evidence that ancient human relatives used toothpicks. Wood fibers were found on a tooth in a 1.2-million-year-old hominin jawbone discovered at an excavation in northern Spain. The fibers were found in a groove at the bottom of the tooth, suggesting they came from regular tooth picking. Mandible of 'Homo antecessor' discovered in the Sima del Elefante with 1,200,000 years old  [Credit: Javier...

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