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The Jurassic Period

Shehab Youssef

Created on September 29, 2024

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Transcript

The Jurassic Period 201.3 MYA - 145 mya

the origin of the dinosaurs

The Jurassic Period was set off by one of the largest mass extinction events after the Triassic Period. More than half of all marine life went extinct but it led to more complex lifeforms to evolve.

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Major Events

The jurassic period was the time of significant change in the structural geography of land, marked by the split of Pangaea.

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Fun Facts

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  • the Alps were formed during this period.
  • The earliest discovered bird fossils, belonging to the Archaeopteryx, were found in Germany
  • the Jurassic Period was named after the Jura mountains that run along the border of France and Switzerland
  • Butterflies first appeared during the Jurassic Period

The World Breaks Apart

Pangaea's separation was the first major event of the Jurassic Period. It split into two major landmasses, Laurasia to the north and Gondwana to the south. Throughout the period, further splitting resulted in significant deposits of sediments along the new seafloor.

  • Large salt deposits from this period are still harvested today.
  • Mountain ranges reached new heights due to the sediment deposits.

What was the world like

Fossil records indicate that global temperatures were higher overall, most likely due to increased volcanic activity.

  • Major increase in aquatic life with more complex biology
  • Large amounts of carbon dioxide led to higher temperatures
  • The earliest bird fossils were discovered during this period.

References

  • Tennant, Jonathan P. “Biotic and Environmental Dynamics through the Late Jurassic–Early Cretaceous Transition: Evidence for Protracted Faunal and Ecological Turnover - Tennant - 2017 - Biological Reviews - Wiley Online Library.” Wiley Online Library, Wiley, 17 Feb. 2016, onlinelibrary.wiley.com/doi/full/10.1111/brv.12255.
  • Cai, Zhanhu. “Sedimentary Evolution and Geological Characteristics of the Jurassic in the South Qiangtang Basin, China.” ProQuest, 2023, www.proquest.com/docview/2819482424?pq-origsite=primo&sourcetype=Scholarly%20Journals.