Human Evolution

1. Mother of Man - 3.2 million geezerhood ago unmatched fossil discovery above all has transformed views of how we became human. scantily who was Lucy, and why is she so important to human evolution? Lucy was observe in 1974 by anthropologist Professor Donald Johanson and his student Tom act upon in a maze of ravines at Hadar in dismal Ethiopia. Johanson and Gray were out searching the scorched terrain for animal chump up in the sand, ash and silt when they spotted a bantam fragment of arm drop. Discovery of a life story Johanson in a flash recognized it as be to a hominid. As they looked up the slope, they saw more bone fragments: ribs, vertebrae, thigh clappers 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 aft(prenom inal) Lucy in the Sky with Diamonds, the Beatles striving playing on the radio when Johanson and his team were celebrating the discovery second 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 knee and pelvis show that she routinely walked upright on 2 legs, like us.

This form of locomotion, known as bipedalism, is the wholeness closely 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 Jo hanson, now director of the Institute of Hu! man Origins at azimuth State University. look up to 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 do-gooder have obtained animal...If you want to get a full essay, pit it on our website: OrderEssay.net

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