Developments from Timeline-1 The evidence of the first Hominids was found about 5.6 mya. The Hominids evolved from Hominoids. They had some common features. Hominids had larger brain than Hominoids. Hominids had an upright posture and bipedal locomotion. There was a marked difference in regard to hand. It helped them in use of tools. Around 2.5 mya, large parts of the earth were covered with snow. There were major changes in the environment. It led to expansion of grassland. Developments from Timeline-2 Around 200,000 years ago, the evolution of the voice box took place. After the evolution of voice box, now the man was about to speak and express his views. About 27,000 years ago, the earliest evidence of figurines made of fired clay was also found. The invention of sewing machines made the life of people more comfortable.