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Hominid Evolution

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caitlyn diss

on 22 April 2013

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Transcript of Hominid Evolution

The early humans Hominid Evolution Hominids - How did they first appear? Fossils dated from around 10 million years ago show that there were hominid species which looked to be an early stage of the monkeys on earth right now. Early hominid species - Australopithecus These animals, known as the species of Australopithecus, are believed to have been around three to five feet tall, and probably fed on leaves, fruits, and the remains of dead animals. There is no evidence that Australopithecus made their own tools. There is, however, strong evidence that they used sticks and bones to help them dig and defend themselves. They were also known to be the most known species at the time and also more advanced. They were also known as a species of Homo Habilis. The Early Humans The second type of early human living on the Earth was Homo erectus, which means: A person who walks upright. Homo erectus lived on the Earth until about 150,000 years ago.

The final type of hominid living on the Earth is Homo sapien. Homo sapien means: A person who can think. All humans living on the Earth today are Homo sapiens. This is one reason why scientists and biologists beleive that we have evolved in this way of evolution. Human brain Hominid brain This picture shows that the early hominid species evolved over the thousands of years. Over the thousands of years, the Hominids' brains have gotten bigger in size. Lucy: The first discovered Hominid Donald C. Johanson and a coworker on November 29, 1974, discovered small bones on the slope of a desert channel at Hadar located in Ethiopia. There were the bones of a unique hominid that did not resemble anything discovered earlier. It was named "Lucy." The small skeleton was an incredible discovery and a significant link in the search for human ancestors. Finding Lucy's remains helped scientists find out more information about how our early ancestors really looked, and how the structure of their body was built.

Not much of the remains of Lucy were found, but this was just enough to prove and explain to scientists and biologists that Lucy has a very similar bone structure to us now. Although Lucy's skull was incomplete, enough of it remained to show that she had a small, apelike brain, and other skulls of her species found at the same site confirmed it.

Because her skeleton was so complete, Lucy gave us a picture of her kind. In the year of 1974, Lucy showed that human ancestors were up and walking around long before the earliest stone tools were made or brains got bigger, and fossil finds of much earlier hominids have confirmed that conclusion. This seemed that it was the first step towards becoming human. The first early step before these Hominids became known as an actual human is called Bipedalism.


More facts about Lucy How Lucy's age gave us information: By scientists and biologists researching more on Lucy, her skull and bones came out to be about 3.5 million years old. This proved to us that since then, the skull and brain has increased in size, and the spine showed that over these years, hominids evolved into walking upright as we do today. Since scientists did not find all of her bones to her feet, the bones from her toes revealed that she had a very similar bone structure to us now, and this also proved that her bone structure was a lot similar to ours. Not only this, but Lucy helped to prove evolution. How old is Lucy? As scientists found these skulls of the early hominids, this helped scientists help find out more information on the theory of evolution. Early skulls of our ancestors
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