GGR305H1 Study Guide - Midterm Guide: Glossopteris, Global Cooling, Carboniferous
23 May 2016
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Land plants start to appear (liverworts, mosses bryophytes) Tetrapods arise (amphibians + lungfish that have limbs and can survive out of water but lay eggs in water still) Plant explosion took so much co2 from atmosphere that had global cooling and ice-house effect. During this time, gondwana moving toward euamerica. Cooling so much that glaciers form on south pole + gondwana. Pushed latitudinal ranges of floras to equator: carboniferous forest: giant lycopods, huge horsetails, no annual rings, really big dragon flies because so much oxygen, fires, lots of insects. Carbon forest sinks down and is covered by sediment. At first have massive ocean circulating heat from equator to poles. Pangaea formed but starting to break up again. Laurasia breaking off: europe and asia separating = tethys ocean. India formerly attached to gondwana kicks up sea floor = volcanism. Paleocene + eocene start off hot (tropics in britain + temperate in arctic)
