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Jurassic Period

Jeremiah Rolling

Created on February 16, 2025

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Transcript

spanning ~56 million years

Triassic Period

~145 million years ago

Cretaceous Period

~201 million years ago

Jurassic Period

The Jurassic period had large conifer forests, warm shallow seas, and a very humid climate. Dinosaurs were very prominent during this time; the first flying brid like species also emerged. The oceans also had giant marine reptiles like the plesiosaurs and ichthyosaurs, for example. On the other hand, early mammals were still small in comparison to the other gargantuan creatures of the prehistoric world.

World

  • The splitting of Pangaea
    • Rising sea levels
    • Mountains formed
  • Major steps in plant evolution
    • First flowering plants emerged
    • First cypress trees emerged
  • New creatures evolved to occupy the air along side land and sea

Major EVENTS

Allosaurus

  1. The Jurassic period is named after the Jura Mountains where geologists first studied its limestone rocks in the early 1800s
  2. The Jurassic Period is divided into three epochs: Early Jurassic, Middle Jurassic, and Late Jurassic.
  3. The largest animals in the Jurassic period were the sauropod dinosaurs
  4. The Tyrannosaurus Rex actually did not exist yet, but its preceding predator the Allosaurus did!

FUn facts

  • Ruiz González, V et al. “Deformation along the Deseado Massif (Patagonia, Argentina) during the Jurassic Period and Its Relationship with the Gondwana Breakup: Paleomagnetic and Geochronological Constraints.” Tectonophysics 834 (2022): 229389-. Web.
  • Kurtén, Björn. The Age of Dinosaurs. New York: McGraw-Hill, 1968. Print.

references

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