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geologic time
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Introduction References & Edit History Quick Facts & Related Topics
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geologic time timeline of Earth's history Grand Canyon rock layering marine family diversity Plumb the depths of geologic time. major evolutionary events
Quizzes
Cross section of Earth showing the core, mantle, and crust
Everything Earth
Pangaea (Pangea) was a supercontinent 225 million years ago formed by plate tectonics and continental drift.
Name That Geologic Interval
Encyclopaedia Britannica thistle graphic to be used with a Mendel/Consumer quiz in place of a photograph.
36 Questions from Britannica’s Most Popular Science Quizzes
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The Anthropocene Epoch: Adding Humans to the Chart of Geologic Time
4:045 Dinosaurs: Monsters of the Past, Tyrannosaur, Trachodon, Triceratops
A Journey Through Time Since the Precambrian
Discover
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7 of the World’s Deadliest Shipwrecks
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9 Mind-Altering Plants
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geologic time: Facts & Related Content

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Facts

Also Known As geological time scale

Photos

geologic time
timeline of Earth's history
Grand Canyon rock layering
marine family diversity
major evolutionary events
See All Images and Interactives →

Related Topics and References

Topics
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Related Quizzes and Features

Quiz
Cross section of Earth showing the core, mantle, and crust
Everything Earth
Pangaea (Pangea) was a supercontinent 225 million years ago formed by plate tectonics and continental drift.
Name That Geologic Interval
Encyclopaedia Britannica thistle graphic to be used with a Mendel/Consumer quiz in place of a photograph.
36 Questions from Britannica’s Most Popular Science Quizzes