Video Title


Title: The Paleozoic Era

Creator: LilliVallance





This video is a great summary of the Paleozoic Era’s important events. It begins by explaining the emergence of complex life forms and ends in a short summary of the lessons. The video includes a thorough explanation of the largest mass extinction the world has ever experienced in the Paleozoic Era.


Why watch this video?


  • Have you ever wondered what the Paleozoic Era consists of?
  • Would you like to know how the largest mass extinction in the world occurred?
  • Have you ever been confused by the Paleozoic timeline of periods?



Key terms

Paleozoic Era – 200 million year defined by the great explosion of life at the beginning of the era and ending with the largest mass extinction seen on Earth.

Cambrian Explosion – the first period of the Paleozoic Era from 541 Ma to 444 Ma involving rapid diversification of animal phyla life.

Permian Extinction – The last period of the Paleozoic Era from 299 Ma to 252 Ma that killed near 90% of the planets species.


Loose ends

  • The video does not go into the details our notes do on the specific species involved in each portion of the era.
  • Details on the fossils found from each stage of the era should have been better described.
  • Location of where the research and evidence occurred should be added. There are many places of evidence that indicate that an orogeny happened along the east coast of North America during the Ordovician.


Self-Test Questions


  1. The ___ was related to rapid seafloor spreading as Pannotia broke up and fragments drifted away from each other.
    1. Ice age
    2. Rise in sea level
    3. Climate change
    4. Global warming
  2. The order of periods from Paleozoic era is:
    1. Devonian, Carboniferous, Permian, Cambrian, Ordovician, Silurian
    2. Triassic, Jurassic, Cretaceous
    3. Cambrian, Jurassic, Creaceaous, Permian
    4. Cambrian, Ordovician, Silurian, Devonian, Carboniferous, Permian
  3. Which period involved both plants and invertebrate species?
    1. Cambrian
    2. Ordovician
    3. Jurassic
    4. Silurian
  4. Which period involved sea creatures leaving the sea and becoming land dwellers?
    1. Devonian
    2. Cambrian
    3. Ordovician
    4. Permian
  5. Which period seen the emergence of flight with winged insects?
    1. Devonian
    2. Cambrian
    3. Carboniferous
    4. Silurian

Answers: B, D, D, A, C


Which of the course modules is this video relevant for? You will be able to select these from a list when submitting the assignment. 

  • Plate Tectonics and Supercontinents
  • Life, Evolution, and the Fossil Record
  • Early Paleozoic: Cambrian and Ordovician
  • Middle Paleozoic: Silurian and Devonian
  • Late Paleozoic: Carboniferous and Permian

Shared by: Angela Patron

Item Credit: LilliVallance

Reuse License: YouTube Standard License

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