Early hominins who sailed across oceans left indirect evidence that they might have been the first to use language

A real language lies behind reconstructed Proto-Indo-European, just as a real language lies behind any dictionary. And that language is a guide to the thoughts, concerns, and material culture of real people who lived in a definite region between about 4500 and 2500 BCE.
David W. Anthony • The Horse, the Wheel, and Language: How Bronze-Age Riders from the Eurasian Steppes Shaped the Modern World
Based on discoveries of ancient hyoid bones, which are the bones that provide support for the larynx and anchorage for the tongue and other muscles required for speaking, researchers believe that as long as 300,000 years ago our ancestors had the ability to speak as we do now.
No other primate has a larynx low enough to produce sounds as complex as ... See more
No other primate has a larynx low enough to produce sounds as complex as ... See more