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This animation shows the fossilization by permineralization of a living organism (the example used is a trilobite). The time scale is consistent with the dimensions of the principle stages in the transformation of a fossil to rock.

  • Decomposition of organic (soft) parts
  • Burial of the carapace (exoskeleton) by sediments
  • Permineralization of the exoskeleton
  • Geological processes
  • Erosion bringing the buried fossil to the surface

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