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Geological Time Scale
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What is the first eon?
Archean
What is the second eon?
Proterozoic
What is the third eon?
Phanerozoic
What are the three eras?
Paleozoic, Mesozoic, Cenozoic
What are the seven periods in the Paleozoic?
Cambrian, Ordovician, Devonian, Mississippian, Pennsylvanian, Permian
What are the three periods of the Mesozoic?
Triassic, Jurassic, Cretaceous
What are the two periods of the Cenozoic?
Tertiary, Quaternary
When did the Paleozoic era begin and end?
570-240 million years ago
When did the Mesozoic begin and end?
240-66 million years ago
When did the Cenozoic begin?
66 million years ago
Author
hphwarts
ID
33558
Card Set
Geological Time Scale
Description
Geological Time Scale
Updated
2010-09-09T02:59:10Z
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