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Search results for: palaeontolog* in all categories
165 results found.
17 pages of results.
21. Towards a New Evolutionary Synthesis [Books]
... populations over relatively short time-periods. Our picture of evolution on a larger scale - macroevolution - comes from comparative anatomy and embryology, from taxonomy and geographical distribution, and from palaeontology. The question naturally arises whether the processes of population genetics are sufficient to account for macroevolution. Very different views can be held on this question" [79: ... arising no earlier than 2,100 Myr ago [12,24,25]. Nevertheless, by 1981, the overall evidence of the fossil record had convinced some palaeontologists, notably Stephen Jay Gould, Niles Eldredge and Steven Stanley, that evolution must proceed in jumps. However, as we saw in chapter 3, this was still ...
22. The Establishment of Gradualism [Books]
... ' in their work, and Albritton wrote in Catastrophic Episodes in Earth History, `Cuvier built his theory on what he considered to be empirical evidence, mainly provided by palaeontology and structural geology'. Huggett painted much the same picture in Cataclysms and Earth History: "Cuvier was very much a hard-nosed empiricist who preferred the positive data furnished ... by scientists with University posts: Hallam is Professor of Geology at the University of Birmingham; Gould is on the Faculty of Harvard University, being primarily an evolutionary biologist and palaeontologist, although he also teaches geology and the history of science; Huggett is a Lecturer in Geography at Manchester University; and Albritton was formerly a Professor of Geology and ...
23. Monitor [Journals] [SIS Workshop]
... at his analysis! Hoagland compares them to the men who criticized Galileo and Leeuwenhoek but refused to look through their lenses. Is nothing new in the world of science? Palaeontological Problems on Ice source: Science vol. 218, 15.10.82, p. 284 Geologists are generally agreed that during the late Cretaceous and early Cenozoic ... Now here is an intelligent application of Velikovsky's ideas in the service of world peace. Rare Fossil Octopus source: New Scientist 20.1 .83, p. 155 Palaeontologists have discovered the oldest known octopus fossil in the Ardèche region of southern France. There is some considerable excitement about this find, uncovered in the Ardèche marl and dated ...
24. Monitor [Journals] [SIS Review]
... 5 .97, p. 51, 28.6 .97, p. 51, Scientific American May 97, p. 51, One of the most amazing palaeontological sites in the world has been found in the Xixian formation in China. Once the bed of a lake, it is now an area of semi-arid badlands. It ... to be able to fly but it could fold them like a bird. Australia was thought to have got its songbird population by stragglers arriving from other areas but now a palaeontologist is claiming that some fossilised bones indicate that they were present in Australia 25 Myrs earlier than in the northern hemisphere, where they are supposed to have evolved. Long ...
25. Monitor [Journals] [SIS Review]
... that he was so enamoured of the Gothic style that his restorations were largely reinventions from his own imagination. How many other historical restorations are fake? In the world of palaeontology a fossil first heralded in the National Geographic, Nov. 99, as a missing link between dinosaurs and birds, has been revealed as a fake with the tail ... when life had recovered from the Cretaceous catastrophe. It appears that its anoxic sediments perfectly preserved the thousands of plants and animals which fell into it over the years, allowing palaeontologists to be able to reconstruct the climate and ecology of the area. The most common fish were related to species which today are able to exist in oxygen-low water by ...
26. Interdisciplinary Indiscipline [Journals] [SIS Review]
... distinguished astronomers at the Royal Observatory, Edinburgh.... Well, it seems to me that on your theory we can link comets not only with astronomy, with palaeontology [extinctions], geology [magnetic reversals, etc], archaeology [2nd millennium BC biblical catastrophes, etc], mythology [gods = planets, etc] ... mutations, the whole group of magnificent creatures died out."  One might be forgiven for wondering how such a mutation spreads through the population! Compare the palaeontologist Adrian J. Desmond: "Erben found the shells becoming progressively thinner.... Dinosaurs were reacting to a brief [by geological standards] but protracted period ...
27. Velikovsky In Collision [Journals] [Kronos]
... and the year lengthened, the axis of rotation changed- and much else besides. In the evidence offered in Worlds in Collision for the theory, archaeology, geology and palaeontology play a minor part. Velikovsky's survey of the evidence from these fields for his theory is given in Earth in Upheaval, published in 1955. The book which he ... And the professional astronomers raised a gale of derision and denunciation that is blowing intermittently still. I do not know of any such reaction by historians, archaeologists, geologists or palaeontologists to Earth in Upheaval. But it is perfectly safe to assume that if there are no such, it is because these specialists shared the astronomers' estimate of the ...
28. On the Disproportion between Geological Time and Historical Time. Part Two - of Earth, Fire and Water [Journals] [SIS Review]
... , for example, M. E. Philcox: Growth Forms and Role of Colonial Coelenterates in Reefs of the Gower Formation (Silurian), Iowa', Journal of Palaeontology 45:2 (1971), pp. 338-46; Scheven: op. cit. , p. 10; D. B. D'Armond: ... with a sometimes large potential for variation within a fixed and preordained gene-pool. Thus, in order to save the belief that life evolved out of nothing, increasing numbers of palaeontologists are adopting Gould's hypothesis of punctuated equilibrium' - a theory to explain the lack of evidence for the theory. The suggestion is that macro-evolution (distinct from variation, ...
29. For the Record. . . [Journals] [Kronos]
... to precipitate." Furthermore, "this enhanced level of radiation could lead to increased mutation rates among living species, thereby explaining sudden appearances and disappearances of species from the palaeontological record." These ideas of Uffen were studied in 1967 and found wanting. "Nonetheless, there is mounting evidence that a correlation does exist between major faunal extinction ... ' ' Then, at the end of his brief essay and almost in passing, Urey suggested- "It seems likely that interesting studies could be made by biologists and palaeontologists in regard to the selection of survivors of such catastrophes." That Urey failed to acknowledge either Worlds in Collision or Earth in Upheaval is more than disingenuous. Recently ...
30. Book Review [Journals] [SIS Workshop]
... have been well-watered and wooded. Coincidentally, around this time geological movements had caused South America to become connected to the North, and the Great American Interchange was beginning. Palaeontology is of necessity the piecing together of bits and pieces of evidence that are grossly incomplete. Simpson does a magnificent job on the story of the South American mammals and ... stocks: marsupials, ungulant (hooved) herbivores, and the rather odd Xenarthrans (armadillos, sloths and anteaters). There is a great controversy over origins, and palaeontologists are still searching for missing links. Here, in the earliest South American Tertiary deposits, the ungulates are already diversified into most of their subsequent orders, many still ...
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