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Mesozoic Era - Kamly Shaheen
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Created on September 17, 2025
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Transcript
Mesozoic era
The era of reptiles!
Here we go!
This era lasted around 186 years
Around 252 million to 66 million years ago!
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What was the world like?
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The world
- The world was very warm. Perfect for reptiles to thrive!
- While the earth went through many changes from warm to cooler. Overall it was on average warmer than todays temperature.
- This can be attributed to the humidity present. As it was much more prominent in and spread further across earth.
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The world through the era
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Three eras occured
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Cretaceous Period
"The climates of the Cretaceous (145–65 mya) resembled those of the Jurassic, but towards the end of the period the world became drier and, as already mentioned, the climate seasonal
(Cloudsley-Thompson)
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Jurassic Period
"The Jurassic period (205–145 mya) was a time of moist climates and luxurious forests. The first flowering of giant dinosaurs began towards the end of the Early Jurassic"
(Cloudsley-Thompson)
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Triassic Period
"The Triassic period (250–205 mya) during which the dinosaurs originated,was a time of comparative aridity, of xerophytic vegetation and abundant reptiles."
(Cloudsley-Thompson)
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Fun Facts!
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Fun Fact #1
"Turtles are absent in Triassic and Jurassic fossil assemblages but are widespread in the Cretaceous"
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(Rivera-Sylva, Et al)
Fun Fact #2
During the Early Cretaceous, the sea level was 25 m higher than it is compared to today!
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(Cloudsley-Thompson)
Fun Fact #3
"Tetrapod reptiles evolved and first diversified on land. Some of them then returned to water and became adapted for swimming; others developed wings and took to the air like birds."
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(Cloudsley-Thompson)
Fun Fact #4
Many animals in the Triassic period were aquatic but not many were truly marine.
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(Cloudsley-Thompson)
Works Cited
Cloudsley-Thompson, J. L. Ecology and Behaviour of Mesozoic Reptiles. Berlin: Springer, 2005. Web.Rivera-Sylva, Héctor E, Kenneth Carpenter, and Eberhard Frey. Dinosaurs and Other Reptiles from the Mesozoic of Mexico. Ed. by KENNETH CARPENTER, EBERHARD FREY, and HÉCTOR E. RIVERA-SYLVA. 1st ed. Bloomington: Indiana University Press, 2014. Print.
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Images Cited
https://www.livescience.com/38596-mesozoic-era.html https://eos.org/research-spotlights/simulating-195-million-years-of-global-climate-in-the-mesozoic https://www.shutterstock.com/search/era-mesozoic?dd_referrer=https%3A%2F%2Fwww.google.com%2F