Understanding their value, researchers started thorough investigations and meticulously gathered and catalogued the discoveries for analysis.
Examining the sediment layers where the fossils were discovered, scientists discovered a buried valley system from the old Solo River, which originally flowed eastward past the now-submerged Sunda Sheld, helping one to grasp the discovery.
The sediments of the valley show a healthy river ecology in late Middle Pleistocene.
A critical turning point in human development, Homo erectus With taller, more muscular physique, longer legs, and shorter arms, they were the first early humans to more exactly reflect us.
Key was to date the deposits. Using Optically Stimulated Luminescence (OSL) on quartz grains, researchers found when the sediments most recently came into direct sunlight.
