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2 million-year-old teeth reveal secrets from the dawn of humanity

For decades, Paranthropus robustus has intrigued scientists as a powerful, big-jawed cousin of early humans. Now, thanks to ancient protein analysis, researchers have cracked open new secrets hidden in 2-million-year-old tooth enamel. These proteins revealed both sex and subtle genetic differences among fossils, suggesting Paranthropus might not have been one species but a more complex evolutionary mix.

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