Difference between revisions of "10. Characteristics of H. ergaster"

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Return to [[History 8 Human Origins Concepts]]
 
Return to [[History 8 Human Origins Concepts]]
  
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Homo ergaster was the probable ancestor of the later homo populations. It emerged in early African populations nearly 1.9 million years ago. H. ergaster had a prominent browridge, a rounded skull, and its teeth were very small, especially when it was compared to the teeth of Australopithecus. (Citation to manual page 23) H. ergaster's body was probably smooth, nearly hairless, and was one of the first hominids to regulate its body temperature by sweating. Its skin would have also been most likely dark to protect it from the Sun's rays. H. ergaster traveled mostly on foot, searching for meat to feed its growing brain and body. To be able to conserve energies from his muscles while walking upright, H. ergaster developed a narrower pelvis. Due to this tight pelvis, baby H. ergasters were born immature in the brain, allowing its brain to grow after it has been born. Nearly 1.6 million years ago, with help from this giant, complex brain, H. ergasters began using Oldowan stone tools, and heart shaped handaxes. Overall, H. ergaster evolved a lot from the earlier hominids, and it later will evolve into a more sophisticated organism. [http://www.bbc.co.uk/sn/prehistoric_life/human/human_evolution/leaving_home1.shtml]
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Homo ergaster, simply meaning working man, lived 1.3 - 1.8 million years ago. New physical features helped them adapt to the unfamiliar evolving African climates. They had longer noses which cooled them down in the hot sun, no body hair, were bipedal, so the sun would only heat the top of their head whereas before when they walked on four legs the sun heated their entire backs, and they also began to sweat, keeping their bodies and brains at a safe temperature. The Homo ergaster had enormous brains leading to new inventive technology. The Homo ergaster's tall bodies and large brains required a lot of energy to properly function. They ate meat to acquire the protein they needed creating bamboo and bi-facial stone tools to hunt their prey and were also the first to make a fire.
  
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-Alexander Kim
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http://anthro.palomar.edu/homo/images/H_ergaster.jpg http://www.bbc.co.uk/staticarchive/f15b2b2f524ac6debf3a61ea56df4210cb7e480f.jpg
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http://humanorigins.si.edu/evidence/human-fossils/species/homo-erectus
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http://www.bbc.co.uk/sn/prehistoric_life/human/human_evolution/leaving_home1.shtml
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The Video Guide: "Walking with Cavemen"
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Left picture from: http://anthro.palomar.edu/homo/homo_2.htm
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Right picture from: http://www.bbc.co.uk/sn/prehistoric_life/human/human_evolution/leaving_home1.shtml
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Sara Doyle

Latest revision as of 09:13, 18 October 2015

Return to History 8 Human Origins Concepts

Homo ergaster, simply meaning working man, lived 1.3 - 1.8 million years ago. New physical features helped them adapt to the unfamiliar evolving African climates. They had longer noses which cooled them down in the hot sun, no body hair, were bipedal, so the sun would only heat the top of their head whereas before when they walked on four legs the sun heated their entire backs, and they also began to sweat, keeping their bodies and brains at a safe temperature. The Homo ergaster had enormous brains leading to new inventive technology. The Homo ergaster's tall bodies and large brains required a lot of energy to properly function. They ate meat to acquire the protein they needed creating bamboo and bi-facial stone tools to hunt their prey and were also the first to make a fire. 


H_ergaster.jpg f15b2b2f524ac6debf3a61ea56df4210cb7e480f.jpg


http://humanorigins.si.edu/evidence/human-fossils/species/homo-erectus

http://www.bbc.co.uk/sn/prehistoric_life/human/human_evolution/leaving_home1.shtml

The Video Guide: "Walking with Cavemen"

Left picture from: http://anthro.palomar.edu/homo/homo_2.htm

Right picture from: http://www.bbc.co.uk/sn/prehistoric_life/human/human_evolution/leaving_home1.shtml

Sara Doyle

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