Photo Gallery of Dating errors. Scientific Essay by David A. Plaisted "Proof of the pudding There are circumstances that provide opportunities for testing.
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Carbondated dinosaur bones are less than 40, years old. Researchers have found a reason for the puzzling survival of soft tissue and collagen in dinosaur bones - the bones are younger than anyone ever guessed. Carbon C dating of multiple samples of bone from 8 dinosaurs found in Texas, Alaska, Colorado, and Montana revealed that they are only 22, to 39, years old. Since dinosaurs are thought to be over 65 million years old, the news is stunning - and more than some can tolerate. After the AOGS-AGU conference in Singapore, the abstract was removed from the conference website by two chairmen because they could not accept the findings. Unwilling to challenge the data openly, they erased the report from public view without a word to the authors. When the authors inquired, they received this letter: They did not look at the data and they never spoke with the researchers.
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They existed during most of the Mesozoic: Pterosaurs are the earliest vertebrates known to have evolved powered flight. Their wings were formed by a membrane of skin, muscle, and other tissues stretching from the ankles to a dramatically lengthened fourth finger. Early species had long, fully toothed jaws and long tails, while later forms had a highly reduced tail, and some lacked teeth. Many sported furry coats made up of hair-like filaments known as pycnofiberswhich covered their bodies and parts of their wings. Pterosaurs spanned a wide range of adult sizes, from the very small anurognathids to the largest known flying creatures of all time, including Quetzalcoatlus and Hatzegopteryx.
It is not about the theory behind radiometric dating methods, it is about their applicationand it therefore assumes the reader has some familiarity with the technique already refer to "Other Sources" for more information. As an example of how they are used, radiometric dates from geologically simple, fossiliferous Cretaceous rocks in western North America are compared to the geological time scale. To get to that point, there is also a historical discussion and description of non-radiometric dating methods. A common form of criticism is to cite geologically complicated situations where the application of radiometric dating is very challenging. These are often characterised as the norm, rather than the exception. I thought it would be useful to present an example where the geology is simple, and unsurprisingly, the method does work well, to show the quality of data that would have to be invalidated before a major revision of the geologic time scale could be accepted by conventional scientists.
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Dinosaurs are a diverse group of reptiles [note 1] of the clade Dinosauria. They first appeared during the Triassic period, between and million years ago,  although the exact origin and timing of the evolution of dinosaurs is the subject of active research. The fossil record indicates that birds are modern feathered dinosaurs having evolved from earlier theropods during the late Jurassic Period. This article deals primarily with non-avian dinosaurs. Dinosaurs are a varied group of animals from taxonomicmorphological and ecological standpoints.
The history of our planet is far more complex than most people would dare to imagine. According to the commonly accepted version of history that is taught in high schools and colleges all over the United States, ancient man was a very simple creature with extremely limited knowledge. Unfortunately for those that promote this flawed version of history, archaeologists keep digging up stuff that directly contradicts it.
To the right is a picture of what appears to be a bipedal dinosaur with small arms in head-to-head combat with a mammoth from the book Buried Alive by Dr. Jack Cuozzo click to enlarge. It was taken by the author in Bernifal Cave, one of the caverns in France that is renowned for Neanderthal art. Mammoth drawings are not unusual in such cave art, but the depiction of an apparent theropod dinosaur is remarkable.