Other questions in this quiz

2. what conditions are need for pyritisation?

  • Anaerobic and sulfur bacteria
  • sulfur bacteria and oxygen
  • sandy sediment
  • shallow sea

3. What replaces the fossil material in silicification?

  • Iron Pyrite
  • Carbon
  • Silica Dioxide
  • Sulfur

4. an external mould has what features of the shell?

  • mostly hard parts
  • soft parts only
  • External features
  • interal features

5. What are exceptional methods of preservation?

  • carbonisation and silicification
  • Tar and pyritisation
  • Amber and Tar
  • carbonisation and amber

Comments

James Disney

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Petrified wood is an example of Silicification, not pyritisation

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