Geologic Time Scale

Front

What is the Geologic Time Scale?

Back

A system of chronological dating that relates geological strata to time, used to describe the timing and relationships of events in Earth's history.

Front

What are the four main Eras of the Geologic Time Scale?

Back

Precambrian, Paleozoic, Mesozoic, Cenozoic.

Front

Which Era is known as the Age of Reptiles?

Back

Mesozoic Era.

Front

What significant event marks the end of the Mesozoic Era?

Back

The mass extinction event that wiped out the dinosaurs.

Front

How long ago did the Cenozoic Era begin?

Back

66 million years ago.

Front

What is the longest Era in the Geologic Time Scale?

Back

Precambrian Era.

Front

What is the significance of the Paleozoic Era?

Back

It is known for the development of early life forms, including fish, amphibians, and reptiles.

Front

What major event occurred during the Jurassic Period?

Back

The dominance of dinosaurs on Earth.

Front

What is the difference between an Era and a Period in the Geologic Time Scale?

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An Era is a larger division of time that encompasses multiple Periods.

Front

What is the current Era we are living in?

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Cenozoic Era.