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Geological Time Scale

Description

Geological Time Scale Mind Map on Geological Time Scale, created by Saira Javed on 07/13/2014.

Mind Map by Saira Javed, updated more than 1 year ago

	Created by Saira Javed over 10 years ago

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Resource summary

Geological Time Scale

Precambrian
1. Bacteria
  1. Photosynthesis
    1. O2 poor to O2 rich
      1. O3
      2. UV H2O
  2. Stromatolites
2. Eukaryotic cells 2100 Ma
  1. Multicellular 1200 Ma
  2. Sexual reproduction
    1. Variation
      1. Eukaryotes specialised
        Multicellular animals
        Ediacaran fauna
Phanerozoic
1. Mesozoic
  1. Cretaceous
    1. Flowering plants
    2. K-Pg mass extinction
      1. Dinosaur extinction
      2. Meteorite and Volcano
        CO2, SO2, dust
        PH acidic
        Photosynthesis reduced
        Autotrophs -food source
  2. Triassic
    1. Mammals
      1. Small
    2. Dinosaurs dominate
  3. Jurassic
    1. Birds
2. Palaeozoic
  1. Cambrian (explosion)
    1. Sea
    2. Chordates
      1. Vertebrates
        Jaw-less fish
    3. Burrowing
    4. Body organised into areas
    5. Shells/skeletons
      1. Excretion deposits
        Advantageous
  2. Ordovician
    1. More fish, diversity
  3. Devonian
    1. Trees
    2. Seeds
      1. Inland colonised
    3. Abundant fish
    4. Vertebrates part-land
      1. Large amphibians
    5. Plant stems, root hairs
  4. Silurian
    1. Jawed fish
    2. Plants and animals to land and freshwater
      1. Insects
      2. Anthopods
      3. Adaptations
        Gravity
        Plant stomata, outer coat
  5. Carboniferous
    1. Reptiles
      1. Shelled eggs
    2. Coal
3. Cenozoic
  1. Palaeogene
    1. Radiation of mammals
  2. Homo Sapiens

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