Elly van Gelderen
Grammaticalization From a Biolinguistic Perspective
The Prehistory Of Language 12.0, 2009
Estimates about the origin of modern human language range from 50,000 to 150,000 years ago. These estimates are based on archeological findings, the presence of tools and beads in eg the Blombos cave at 70,000 years ago, and mutations in a gene connected to ...