Human Evolution Our farthest believed ancestor is believed to be Australopithecus afarensis. This species, which lived between three and four million years ago, is believed to be the first real hominid because it is the oldest, and "most primitive of any definite hominid form thus far found. Evidence from fossilized footprints, as well as pelvic and leg bones, which were similar to modern hominids, led scientists to believe that they could walk upright. Its teeth …
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showed last 75 words of 1104 total
…sapiens sapiens. A clear progression of features, especially in the cranial region, can be seen. Features such as brain size are seen to have developed and increased from our earliest ancestors up until now, while other "non-essential" features, like a furry skin, a supraorbital ridge, and large teeth, have diminished. This shows evolution of our species, from a more primitive creature, to our modern shape, which is highly adaptive, intelligent, and suited to any environment.