Tibetan Buddhist Text Chronology Prehistoric Tibet 500 million years ago Earliest fossils from Tibet are shelled sea creatures as seas covered the landforms that would later become the Tibetan plateau. 200 million years ago Tibetan plateau forming and rising out of the sea as land masses join together in the supercontinent known as Pangaia.
Dinosaurs roam tropical forests and swampland.
The Himalayas and the plateau continue to rise at the rate of one to five inches per year.