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Unformatted text preview: history has been much investigated and scientific consensus of its cause is emerging. During the Paleozoic we see several major advances in life. The aformentioned Cambrian Explosion is the first. The evolution of plants from some group of green algae during the Ordovician is another, since these plants moved from water onto land, paving the way for vertebrate animals to follow. The first vertebrates, amphibians , were little more than legged fish, although their remote descendants would come to rule the land as reptiles , the first truly terrestrial vertebrates. Geologically, the Paleozoic is noted for the assembly of Pangaea , the world supercontinent proposed back in the 1912 book The Origin of Continents and Oceans by German meteorologist Alfred Wegener (1880-1930) as part of his continental drift hypothesis. At the close of the precambrian there was already a world supercontinent, Rodinia, that broke apart during the early Paleozoic....
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- Fall '10
- Biology, Cambrian, Alfred Wegener, Geological history of Earth, Pangaea