Q.What is the significance of Australopithecus in the study of human evolution? Where and roughly when is it believed to have lived, and what evidence suggests it combined ape-like and human-like features?

Human evolution traces a sequence of hominid fossils showing progressive change in brain size, posture, dentition and behaviour. Dryopithecus and the derived Ramapithecus/Sivapithecus (~14 mya) were hairy, ape-like, and moved like modern gorillas/chimpanzees. Australopithecus (~5 mya, East Africa) was bipedal, omnivorous, about 1.5 m tall, with a brain capacity of only 350–450 cc. Homo habilis (~2 mya) had a larger brain (650–800 cc), was largely vegetarian, and used chipped-stone tools. Homo erectus (~1.7 mya) was markedly more human-like, with a brain capacity of ~900 cc, and was among the first hominids to leave Africa. Neanderthal man (34,000–100,000 years ago, Germany) had a brain capacity of 1400 cc but a distinctly different build (semi-erect posture, heavy brow ridges, no chin); Neanderthals used fire, animal hides and buried their dead, but did not farm. Cro-Magnon man (France), an ancestor of modern Europeans, is known for cave art. Homo sapiens, modern humans, arose in Africa roughly 25,000 years ago with a brain capacity of 1300–1600 cc, and were the first to cultivate crops and domesticate animals.