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Smithsonian new data: Moving back origin of ‘Homo Sapiens’

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Smithsonian paleoanthropologist, Richard Potts with his team of scientists, reanalyzed the new scientific data and ascertained how the adaptability of human kind to physically acclimate to unpredictable types of environmental situations.

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Therefore, it permitted the earliest species of Homo physiognomies to physically become diverse, survive, adapt and to begin migration from Africa to Eurasia 1.85 million years ago.

The oldest known Homo Sapiens remains were unearthed and classified by Richard Leakey with his team from the Kenya National Museum, in 1967, from Omo Kibish Formation rocks close to Kibish, Ethiopia. They found one modern Homo Sapiens and the other was primitive.

Therefore, after they did an analysis of the geologic layers surrounding those Ethiopian fossils, they mistakenly estimated the remains to date back only 195,000 years ago. Ethiopia has now become the current choice for the cradle of Homo sapiens due to their very ancient beginnings.

“Unstable climate conditions favored the evolution of the roots of human flexibility in our ancestors,” said Richard Potts, curator of anthropology and director of the Human Origins Program at the Smithsonian’s National Museum of Natural History.

“The narrative of human evolution that arises from our analyses stresses the importance of adaptability to changing environments, rather than adaptation to any one environment, in the early success of the genus Homo.”

Paleoanthropologists presented data stating that the brain and body size has been increasing from 2 million to 800,000 years ago by spreading the Homo lineage.

During this period in time, early humans migrated around the globe, encountering many different and demanding ecosystems on different continents. Brain size grew more rapidly during the time of dramatic climate change.

Larger brains were developed more and assisted early humans in communication with one another and to survive their habitats. Over the millenniums, the brain size tripled. Our modern Homo sapiens brain is the largest and most complicated of any primate.

With a large brain, longer legs, the ability to use tools and lengthy growth periods were all thought to have evolved together at the start of the Homo lineage in response to the Earth’s changing climate; however, scientists have evidence showing those traits evolved separately and not all at one time.

When looking at the Hominine Evolution (chart), which depicts human evolution from 3.0 -1.5 million years ago by illustrating the range of early human species and behaviors, which is important to how early Homo Sapiens settled into a habitat, people today can live in several different homes around the world.

Additional information about this study is available in the July 4 issue of Science.