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Geological Time Scale Project
Michael Rubenfeld
Created on February 20, 2023
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The Cretaceous Period
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146 Ma - 65.5 Ma
During this time...
Interesting Facts
The climate of the Cretaceous period was warmer than it is today. Evidence shows that there were tropical conditions through the 45th parallel north, which crosses the northern part of the U.S.. The temperature was lower at the beginning of the period and reached a maximum temperature in the middle before dropping again at the end of the period. The water temperature was 30 °C (86 °F) around the equator and temperatures ranging from 14 °C (57 °F) to 17 °C (63 °F) depending on the season at the poles.
Laramide Orogeny
The Cretaceous Period Epochs
A major event:
The Cretaceous-Tertiary extinction
Origin of the name "Cretaceous"
Animals during the Cretaceous Period
Marine Animals
Plants
Land Animals
- Dinosaurs
- Pterosaur
- Marsupials
- Hesperornis
- Cycads
- Ginkgoes
- Conifers
- Ferns
- Angiosperms
- Ammonites
- Belemnites
- Plankton
- Plesiosaurs
- Ichthyosaurs
- Chondrichthians
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References Used
- The Cretaceous Period. (n.d.). Retrieved February 19, 2023, from https://ucmp.berkeley.edu/mesozoic/cretaceous/cretaceous.php
- Encyclopædia Britannica, inc. (2023, January 12). Cretaceous period. Encyclopædia Britannica. Retrieved February 19, 2023, from https://www.britannica.com/science/Cretaceous-Period
- Parks, A. (2022, September 26). The cretaceous period: Major events, animals, and when it lasted. AZ Animals. Retrieved February 19, 2023, from https://a-z-animals.com/blog/the-cretaceous-period-major-events-animals-and-when-it-lasted/
- https://www.nps.gov/articles/000/cretaceous-period.htm#:~:text=During%20the%20Cretaceous%2C%20accelerated%20plate,flood%20from%20the%20Arctic%20region.
- Ogg, Ogg, G., & Gradstein, F. M. (2016). A Concise Geologic Time Scale. Elsevier.
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