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Prehistoric Scratchpad
PhBP Po10BP

Second period of the Paleozoic.

Ordovician Period Web Pages[]

Classification[]

  • Paleozoic Era - Early age of the animals.
    • Cambrian Period - Period that experienced the greatest explosion in animal life. Took place after Snowball Earth and a mass extinction of the pre-cambrian complex life. Many types of modern life are represented in this period, including Arthropods (trilobites, already diverse), molluscs (sea shells), echinoderms (sea urchins, starfish), and the oldest vertebrates (Haikouichthys). The development of the complex eye is thought to have originated at this time, accelerating evolution.
    • Ordovician Period
      • Early Ordovician Epoch - Early Ordovician Epoch
      • Middle Ordovician Epoch - Middle Ordovician Epoch
      • Late Ordovician Epoch - Late Ordovician Epoch
    • Silurian Period - Third period of the Paleozoic.


Ordovician Period In the News[]

Sample (Year)[]

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