PDF-(READ)-The Fossil Trail: How We Know What We Think We Know About Human Evolution

One of the most remarkable fossil finds in history occurred in Laetoli Tanzania in 1974 when anthropologist Andrew Hill diving to the ground to avoid a lump of elephant dung thrown by a colleague came face to face with a set of ancient footprints captured in stonethe earliest recorded steps of our faroff human ancestors some three million years old Today we can see a recreation of the making of the Laetoli footprints at the American Museum of Natural History in a stunning diorama which depicts two of our human forebears walking side by side through a snowy landscape of volcanic ash But how do we know what these threemillionyearold relatives looked like How have we reconstructed the eonslong journey from our first ancient steps to where we stand today In short how do we know what we think we know about human evolution In The Fossil Trail Ian Tattersall the head of the Anthropology Department at the American Museum of Natural History takes us on a sweeping tour of the study of human evolution offering a colorful history of fossil discoveries and a revealing insiders look at how these finds have been interpretedand misinterpretedthrough time All the major figures and discoveries are here We meet Lamarck and Cuvier and Darwin we learn that Darwins theory of evolution though a bombshell was very congenial to a Victorian ethos of progress right up to modern theorists such as Niles Eldredge and Stephen Jay Gould Tattersall describes Duboiss work in Java the many discoveries in South Africa by pioneers such as Raymond Dart and Robert Broom Louis and Mary Leakeys work at Olduvai Gorge Don Johansons famous discovery of Lucy a 34 millionyearold female hominid some 40 complete and the more recent discovery of the Turkana Boy even more complete than Lucy and remarkably similar to modern human skeletons He discusses the many techniques available to analyze finds from fluorine analysis developed in the 1950s it exposed Piltdown as a hoax and radiocarbon dating to such modern techniques as electron spin resonance and the analysis of human mitochondrial DNA He gives us a succinct picture of what we presently think our family tree looks like with at least three genera and perhaps a dozen species through time though he warns that this greatly underestimates the actual diversity of hominids over the past two million or so years And he paints a vivid insiders portrait of paleoanthropology the dogged work in the broiling sun searching for a tooth or a fractured corner of bone amid stone litter and shadows with no guarantee of ever finding anything And perhaps most important Tattersall looks at all these great researchers and discoveries within the context of their social and scientific milleu to reveal the insidious ways that the received wisdom can shape how we interpret fossil findings that what we expect to find colors our understanding of what we do find Refreshingly opinionated and vividly narrated The Fossil Trail is the only book available to general readers that offers a full history of our study of human evolution A fascinating story with intriguing turns along the way this wellillustrated volume is essential reading for anyone curious about our human origins. Park Road 12 Park Road 1 SR 278 To Zaleski State Forest Equestrian Camp Lake Hope Schoolhouse Interpretive Center To Zaleski State Forest Headquarters 4 mi To Logan 25 mi Nelsonville 15 mi To Lake Hope State Park Campground Zaleski Backpack Trail The Oldest Fossil Evidence of Life The Paleontological Societyconsuming. A faster method is to concentrate the fossilsby dissolving the rock in mineral acid. Acid-resistantorganic-walled fossils are a What we will learn about Fossils?. We will learn how fossils form?. What types of fossils exist?. How do scientists determine the age of fossils?. What do fossils reveal to scientists?. What is a fossil?. Variation. Evolution. What is Evolution?. Evolution is the idea that many small-scale variations can produce large-scale directional variations which give . rise to offspring . which are of . a different kind than their ancestors. Data Driven Process Supported by Evidence. TEKS. (7) . The student knows evolutionary theory is a scientific explanation for the unity and diversity of life. . The student is expected to. :. (. A)  . First… choose your character!. Diana the Digging Diva. Eric the Expert Explorer. Step one: Choose your dig location. Location One:. Lee County, Florida . Location Two: . Delta, Utah. Location One: Lee County, Florida. Irreducible complexity of cells. Creationists argue that there is no catalyst or driving force to cause evolution, that the law of entropy means things become more disordered on their own. Biochemist Michael Behe popularized the concept of . How did they form?. Research by:. . Harold Coffin, PhD . Arthur Chadwick, PhD. Collaborators from Geoscience Research Institute and Loma Linda University. Introduction:. In the 1970’s the Yellowstone fossil forests were being argued. Early Life on Earth. 3.8. billion yrs ago, all organisms lived in the . ocean. Fossils provide evidence of . life . Many . different. types . Age. = relative age (layers) and . absolute. age (radioactive dating).. Webquest. Evidence. 2. Where is . Hadar. and why is it significant. ? . Ethiopia, Africa; place of pilgrimage for those who wish to study where humans came from. 3. What is a hominid. ? . A creature that walks upright. . Fossils are the . preserved remains . or traces of . living. things. Most fossils form when . living. things die and are buried by . sediments. . The . sediments. slowly harden into . rock. CHRIS CARRUTHERS. ADAM KOGLER. YAO HAI. MICHAEL. DICKERSON. MICHAEL. OSTROWSKY. MATT. PORTER. RYAN. MARTIN . History of Fossil Inc.. . Delaware Corporation formed in 1991.. Went Public in 1993. Causes of Evolution: . Natural Selection . Migration. Mutation. What is Natural Selection? . Survival of the ‘fittest’. Occurs through INHERITED adaptations. What is migration?. Movement of animals from one area to another. . 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