Evolutionary Palaeobiology of Deep-water Conodonts PDF Download
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Author: Caroline J. Smith
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Caroline J. Smith
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Richard John Aldridge
Publisher: British Micropalaeontological Society
ISBN:
Category : Nature
Languages : en
Pages : 214
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Author: Geological Society of London
Publisher: Geological Society of London
ISBN: 9781862391062
Category : Science
Languages : en
Pages : 216
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Author: Walter C. Sweet
Publisher: Oxford University Press, USA
ISBN:
Category : Nature
Languages : en
Pages : 232
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Very Good,No Highlights or Markup,all pages are intact.
Author: Richard John Aldridge
Publisher:
ISBN: 9780853129066
Category : Conodonts
Languages : en
Pages : 0
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Author: Simon J. Knell
Publisher: Indiana University Press
ISBN: 0253006066
Category : Science
Languages : en
Pages : 635
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A fascinating, comprehensive, accessible account of conodont fossils—one of paleontology’s greatest mysteries: “Deserves to be widely read and enjoyed” (Priscum). Stephen Jay Gould borrowed from Winston Churchill when he described the eel-like conodont animal as a riddle wrapped in a mystery inside an enigma. The search for its identity confounded scientists for more than a century. Some thought it a slug, others a fish, a worm, a plant, even a primitive ancestor of ourselves. As the list of possibilities grew, an answer to the riddle never seemed any nearer. Would the animal that left behind the miniscule fossils known as conodonts ever be identified? Three times the creature was found, but each was quite different from the others. Were any of them really the one? Simon J. Knell takes the reader on a journey through 150 years of scientific thinking, imagining, and arguing. Slowly the animal begins to reveal traces of itself: its lifestyle, its remarkable evolution, its witnessing of great catastrophes, its movements over the surface of the planet, and finally its anatomy. Today the conodont animal remains perhaps the most disputed creature in the zoological world.
Author: Frank Harold Trevor Rhodes
Publisher: Geological Society of America
ISBN: 0813721415
Category : Conodonts
Languages : en
Pages : 308
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Author: Jean Guex
Publisher: Springer Nature
ISBN: 3030472795
Category : Science
Languages : en
Pages : 319
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It is widely acknowledged that life has adapted to its environment, but the precise mechanism remains unknown since Natural Selection, Descent with Modification and Survival of the Fittest are metaphors that cannot be scientifically tested. In this unique text, invertebrate and vertebrate biologists illuminate the effects of physiologic stress on epigenetic responses in the process of evolutionary adaptation from unicellular organisms to invertebrates and vertebrates, respectively. This book offers a novel perspective on the mechanisms underlying evolution. Capacities for morphologic alterations and epigenetic adaptations subject to environmental stresses are demonstrated in both unicellular and multicellular organisms. Furthermore, the underlying cellular-molecular mechanisms that mediate stress for adaptation will be elucidated wherever possible. These include examples of ‘reverse evolution’ by Professor Guex for Ammonites and for mammals by Professor Torday and Dr. Miller. This provides empiric evidence that the conventional way of thinking about evolution as unidirectional is incorrect, leaving open the possibility that it is determined by cell-cell interactions, not sexual selection and reproductive strategy. Rather, the process of evolution can be productively traced through the conservation of an identifiable set of First Principles of Physiology that began with the unicellular form and have been consistently maintained, as reflected by the return to the unicellular state over the course of the life cycle.
Author: David Leigh Clark
Publisher: Geological Society of America
ISBN: 0813721962
Category : Science
Languages : en
Pages : 347
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 60
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