Ordovician-Silurian Mass Extinction: Causes, Evidence & Species


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Animals in which areas were impacted most severely by the Ordovician-Silurian extinction?

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1. Which of these is an example of a phylum that lost a large amount of genetic diversity in the Ordovician-Silurian extinction?

2. What change seems to have caused the Ordovician-Silurian extinction?

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About This Quiz & Worksheet

This quiz/worksheet will test what you know about the Ordovician-Silurian mass extinction. For the quiz, you'll be answering questions on key topics like the animals most affected by this event and the phylum that lost genetic diversity.

Quiz & Worksheet Goals

You'll be quizzed on these key points:

  • The cause of the Ordovician-Silurian mass extinction
  • The climatic shift at the end of the Ordovician period
  • The lowering of sea levels during that period

Skills Practiced

  • Knowledge application - use your knowledge to answer questions about the Ordovician-Silurian mass extinction
  • Making connections - use your understanding of the cause of the extinction to explain how it impacted a certain phylum and its genetic diversity
  • Information recall - access the knowledge you've gained regarding the late Ordovician period and the reason sea levels were lowered

Additional Learning

Feel free to learn more with the accompanying lesson called Ordovician-Silurian Mass Extinction: Causes, Evidence & Species. You'll be taught about the following:

  • Overview of the Ordovician-Silurian mass extinction and when it happened
  • Life that was thriving at the end of the Ordovician period
  • Number of species that died during the Ordovician-Silurian mass extinction
  • Various causes of this event and how it affected life on Earth
Final Exam
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