Human Evolution

1. Mother of Man - 3.2 million geezerhood ago peerless fossil discovery above all has transformed views of how we became human. only who was Lucy, and why is she so important to human evolution? Lucy was detect in 1974 by anthropologist Professor Donald Johanson and his student Tom twine in a maze of ravines at Hadar in mettlesome Ethiopia. Johanson and Gray were out searching the scorched terrain for animal smiler up in the sand, ash and silt when they spotted a bantam fragment of arm bone up. Discovery of a life history Johanson in a flash recognized it as belong to a hominid. As they looked up the slope, they saw more bone fragments: ribs, vertebrae, thighfinger cymbals and a partial jawbone. They in conclusion unearthed 47 bones of a skeleton - nearly 40% of a hominid, or humanlike creature, that lived around 3.2 million years ago. Based on its small size, and pelvic shape, they concluded it was egg-producing(prenominal) and named it Lucy a ft(prenominal) Lucy in the Sky with Diamonds, the Beatles birdcall playing on the radio when Johanson and his team were celebrating the discovery grit at camp. An upright chimp Like a chimpanzee, Lucy had a small brain, long, dangly arms, short legs and a cone-shaped thorax with a large belly. But the complex body part of her genu and pelvis show that she routinely walked upright on dickens legs, like us.

This form of locomotion, known as bipedalism, is the wholeness some important difference between humans and apes, placing Lucy firm in spite of appearance the human family. Bipedalism is the most distinctive, apparently earliest, defining peculiar(prenominal) of! humans, says Johanson, now music director of the Institute of Human Origins at azimuth State University. value from Afar Johanson named Lucys species Australopithecus afarensis, which means southern ape of Afar, after the Ethiopian region where Hadar is located. 3.5 million years ago, Australopithecus afarensis foraged for fruit, gaga and seeds in a mixture of savannah and woodland. It may in summing up have obtained animal...If you want to get a full essay, score it on our website: BestEssayCheap.com

If you want to get a full essay, visit our page: cheap essay