The laryngeal descent theory (LDT) posits that language became possible only after anatomically modern Homo sapiens evolved around 200,000 years to 300,000 years ago.
The laryngeal descent theory (LDT) posits that language became possible only after anatomically modern Homo sapiens evolved around 200,000 years to 300,000 years ago. In H. sapiens, the larynx is lower in the throat than in our pre-H. sapiens ancestors or in modern non-human primates.