Our lineage's evolving pelvic structure appears to be a result of alterations in locomotion, ecology, climate, and brain size.
According to the fossil record, Australopithecus predates both Homo and contemporary humans. Bipedalism was formerly thought to be preceded by enormous brain size, but the finding of Australopithecus, which had a tiny brain yet acquired bipedalism, disproved this notion.
What made Primitive organisms, one of the oldest hominids, so important? They could have stood straight and walked on two legs. The majority of people relied on hunting and gathering for their livelihoods throughout the Old Stone Age.
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