Specimen Research Paper

Specimen Research Paper-57
They used mathematical formulas that relate femur length to stature to predict that Lucy stood approximately 104 to 106 centimeters (cm) tall (Feldesman & Lundy, 1988; Jungers, 1988; Mc Henry, 1991). Femoral lengths and stature in Plio-pleistocene hominids.

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Artists who are very knowledgeable about anatomy often work with scientists to create reconstructions of fossil hominins.

They use casts of the fossils, build up muscles and flesh out of clay, paint them and add hair.

Dark skin is primarily caused by the presence of a pigment called melanin which provides protection from the harmful effects of ultraviolet radiation (Jablonski and Chaplin, 2000). Johanson, is it still appropriate to use the term "missing link" for fossils like Lucy, given what we now know about the diversity of the hominin family tree and in light of all of the new discoveries being made in paleoanthropology? Johanson: “Scientists [no longer] like to use the term ‘missing link’ because it implies there is one ancestor that uniquely forms the bridge or link between our common ancestor with the African apes and ourselves.

Populations of modern humans who traditionally live near the equator and are susceptible to high levels of UV radiation exposure have darkly pigmented skin. The chain of evolution is long and continuous, spanning millions of years and is linked together by many different species.

Reconstruction of Australopithecus afarensis couple including "Lucy." Reconstruction by John Holmes under the direction of Ian Tattersall in the Hall of Human Origins, American Museum of Natural History, New York, NY.

It is possible that Lucy had darkly pigmented skin on her face and body.

*Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author and do not necessarily reflect the views of the National Science Foundation. In the United States of America, the year's number-one music singles included "Annie's Song" by John Denver and "Bennie and the Jets" by Elton John, but an international field crew of paleoanthropologists, geologists, graduate students, and Ethiopian fossil-hunters were not listening to the latest U. hits under their research tent; they were listening to the 1967 Beatles track, "Lucy in the Sky with Diamonds." So, it was the nickname "Lucy," not "Annie" or "Bennie," as it might have been, assigned to a stunning partial skeleton of a fossil human ancestor, the first fragments of which were discovered by Dr.

Donald Johanson and his graduate student, Tom Gray, while walking across 3.2 million year old sediments at the site of Hadar, Ethiopia. He had traveled to Ethiopia before, in 1972, on a reconnaissance trip to inspect the geological formations and fossiliferous deposits of the Afar region of Ethiopia, and again in 1973, when he made his first hominin discovery at Hadar—a knee joint. Johanson was optimistic about what the team might find and he became more expectant when his Ethiopian colleague, Alemayehu Asfaw, discovered some hominin jaws near their Hadar camp (Johanson & Edey, 1981; Johanson and Wong, 2009).

In addition, the color and appearance of fossils is determined, in part, by the minerals that were present in the deposits where the fossils formed and the type of weathering the fossils experienced, so a group of fossils that formed at different times in different deposits would likely be different colors and show different signs of weathering.

Lucy’s skeleton comprises fossil fragments that are extremely similar in appearance. Mortality and the magnitude of the "wild effect" in chimpanzee tooth emergence.


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