flora

    Cards (15)

    • In the Devonian period forests began to appear as plants grew trunks, leaves, roots and seeds for the first time
    • Plants appeared in the oceans (Precambrian)
      630 million years ago
    • Plants are often washed into lakes or the sea where preservation chances are better
    • Plants from boreal, temperate or tropical biomes

      Can be determined
    • Pollen
      Good paleoenvironmental indicators
    • Pollen
      Can also be used to identify a species of plant
    • Leaves, bark and stems
      Preserved and can be used to identify specific species of plants
    • Pollen is very abundant and widespread but it is so small that a high powered microscope is needed to see it
    • Terrestrial environments are poor location for fossilisation
    • Some ancient millipedes began to consume the early plants in the Silurian era
    • Pollen
      Small grains that are resistant, which is better for preservation
    • Primitive plants colonised the land in the Ordovician period, they were very small and had no root structure
    • Flora
      Includes ferns, leaves, roots and trunks; they are body fossils
    • Leaves, bark and stems
      Good paleoenvironmental indicators
    • 300 million years ago tropical rainforests began to grow and were turned into coal
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