Homo Habilis and Homo Erectus: The History and Legacy of Modern Humans' Direct Ancestors

Nonfiction

eAudiobook

Provider: hoopla

Details

PUBLISHED
[United States] : Findaway Voices, 2025
Made available through hoopla
EDITION
Unabridged
DESCRIPTION

1 online resource (1 audio file (3hr., 39 min.)) : digital

ISBN/ISSN
9798318391316 MWT18065827, 18065827
LANGUAGE
English
NOTES

Read by Victoria Woodson

The evolutionary path from the original primates to modern man is a long one and has taken many twists and turns, but naturally, as the fossil record grows, scientists gain a more complete understanding of our own mental and physical history in terms of genetics and anatomy. However, the correct order and relationships of the various specimen types are difficult to pin down. Many representative samples have been found in such minute amounts as to not preclude anomalies. They have been discovered in various stages of wear. Modern features did not occur simultaneously or uniformly, taking millions of years to become manifest in later types. Up to the present days Homo sapiens, examples of the main types have been hybrids of older and more modern features. One of the earliest species of the genus Homo to be discovered is Homo habilis, which basically means handy man. The name comes from the belief at the time of its discovery that this species was the first to start using stone tools. The first fossils to be uncovered in Olduvai Gorge were from the same stratigraphic layer as simple stone tools. Fossils of the crania and postcranial skeleton for this species have been found in both eastern and southern Africa and date to around 2.51.6 million years ago. Given the gradual changes that take place in evolution, Homo habilis shares a number of characteristics that are similar to the genus Australopithecus, such as in the postcranial elements. That said, the size and shape of the Homo habilis skull are markedly different. The size of the brain is much larger relative to the size of the body, being around 680 cc. In order to house a larger brain, the skull features a more vertical frontal bone, creating a more vertical forehead. The brow ridges that sit on the lower portion of the frontal bone are also reduced in size

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