Homo erectus: The History of the Archaic Humans Who Left Africa and Formed the First Hunter-Gatherer Societies by Charles River Editors
Requirements: .ePUB reader, 1.1 MB
Overview: Most scientists believe the evolution of humans has a history as long as life itself. Anatomically modern humans and all other life that has existed on the planet first came about from the single-celled microorganisms that emerged approximately 4 billion years ago. Through the processes of mutation and natural selection, all forms of life developed, and this continuous lineage of life makes it difficult to say precisely when one species completely separates from another. In other words, scientists still debate when a human became a human rather than the ancestor species that came before.
Around 1.8 million years ago, a third species of Homo appeared in the fossil record. H. erectus would have shared the landscape for a time with H. habilis and H. rudolfensis, but the fossils of H. erectus are not limited to eastern and southern Africa. Instead, they are found across Africa and parts of mainland and insular Asia. This is the first species of Homo to be found outside Africa (Rightmire 1993).
Features of H. erectus suggest an evolution toward modern humans, and the features which separate H. erectus from the other Homo species are found in the skull. The size of the brain was approximately 900 cc, making it larger than the brain size of H. habilis. H. erectus would not have the largest brain capacity of the Homo genus during its existence, with the emergence of H. heidelbergensis approximately 800,000 years ago. The larger brain size may not matter much when the size of the brain is considered with the size of the body, which also increased.
Genre: Non-Fiction > History
Download Instructions:
https://ouo.io/G6UDQGQ
https://ouo.io/dhKGcBt
