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Home > Art, Film & Photography > Cambrian: Cambrian Explosion, Small Shelly Fauna, Microbial Mat, Burgess Shale Type Preservation, Cambrian Substrate Revolution, Iapetus Ocean
Cambrian: Cambrian Explosion, Small Shelly Fauna, Microbial Mat, Burgess Shale Type Preservation, Cambrian Substrate Revolution, Iapetus Ocean

Cambrian: Cambrian Explosion, Small Shelly Fauna, Microbial Mat, Burgess Shale Type Preservation, Cambrian Substrate Revolution, Iapetus Ocean


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About the Book

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 33. Chapters: Cambrian explosion, Small shelly fauna, Microbial mat, Burgess Shale type preservation, Cambrian substrate revolution, Iapetus Ocean, Stratigraphy of the Cambrian, Discredited hypotheses for the Cambrian explosion, Rheic Ocean, Warrior Formation, Proto-Tethys Ocean, Cambrian-Ordovician extinction event, Dresbachian, Tornquist Sea, Sauk sequence, Doushantuo type preservation, End-Botomian mass extinction, Trempealeauan, Khanty Ocean, Franconian, Calcimicrobe, Steptoean positive carbon isotope excursion, Cathedral escarpment. Excerpt: The Cambrian explosion or Cambrian radiation was the relatively rapid (over a period of many millions of years) appearance, around, of most major phyla, as demonstrated in the fossil record, accompanied by major diversification of other organisms, including animals, phytoplankton, and calcimicrobes. Before about, most organisms were simple, composed of individual cells occasionally organized into colonies. Over the following 70 or 80 million years the rate of evolution accelerated by an order of magnitude (as defined in terms of the extinction and origination rate of species) and the diversity of life began to resemble today's. The Cambrian explosion has generated extensive scientific debate. The seemingly rapid appearance of fossils in the "Primordial Strata" was noted as early as the mid 19th century, and Charles Darwin saw it as one of the main objections that could be made against his theory of evolution by natural selection. The long-running puzzlement about the appearance of the Cambrian fauna, seemingly abruptly and from nowhere, centers on three key points: whether there really was a mass diversification of complex organisms over a relatively short period of time during the early Cambrian; what might have caused such rapid change; and what it would imply about the origin and ev...


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Product Details
  • ISBN-13: 9781157399421
  • Publisher: Books LLC, Wiki Series
  • Publisher Imprint: Books LLC, Wiki Series
  • Height: 246 mm
  • No of Pages: 34
  • Spine Width: 2 mm
  • Weight: 82 gr
  • ISBN-10: 1157399428
  • Publisher Date: 05 Jul 2011
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Sub Title: Cambrian Explosion, Small Shelly Fauna, Microbial Mat, Burgess Shale Type Preservation, Cambrian Substrate Revolution, Iapetus Ocean
  • Width: 189 mm


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