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Quick TrainerGeologic Time Periods in Order
Master the sequence of Earth's eons, eras, and periods from the Hadean to today.
Science30 items3 levelsDifficulty 3/5
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Levels
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1
Eras & Big Picture
8 items
2
Periods in Sequence
11 items
3
Eons, Epochs & Details
11 items
All 30 cards
What is the current geologic eon called?
Phanerozoic
Which era is known as the "Age of Dinosaurs"?
Mesozoic
Which era is the current one, the "Age of Mammals"?
Cenozoic
Which era contains the Cambrian, Devonian, and Permian periods?
Paleozoic
What broad informal term covers all time before the Cambrian?
Precambrian
Which period is famous for the "Cambrian Explosion" of life?
Cambrian
What is the current geologic period?
Quaternary
List the three eras of the Phanerozoic, oldest to youngest.
Paleozoic, Mesozoic, Cenozoic
Which period comes immediately after the Cambrian?
Ordovician
Which period comes after the Ordovician?
Silurian
Which period comes after the Silurian?
Devonian
The Devonian is known as the "Age of" what?
Fishes
Which period follows the Devonian?
Carboniferous
Which period ended the Paleozoic Era with Earth's largest mass extinction?
Permian
Which period began the Mesozoic Era?
Triassic
Which period comes after the Triassic?
Jurassic
Which is the last period of the Mesozoic Era?
Cretaceous
Which period began the Cenozoic Era?
Paleogene
Which period comes after the Paleogene?
Neogene
What is the earliest (oldest) eon in Earth's history?
Hadean
Which eon comes after the Hadean?
Archean
Which eon comes after the Archean?
Proterozoic
Which eon began roughly 541 million years ago with abundant complex life?
Phanerozoic
What is the current epoch we live in?
Holocene
Which epoch preceded the Holocene (the "Ice Age" epoch)?
Pleistocene
Which mass extinction ended the Cretaceous Period?
K-Pg extinction
Which period saw the formation of vast coal-forming swamp forests?
Carboniferous
In North America, the Carboniferous is split into which two periods (older first)?
Mississippian and Pennsylvanian
What is the proposed epoch reflecting major human impact on Earth?
Anthropocene
Which three periods make up the Cenozoic Era, in order?
Paleogene, Neogene, Quaternary
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