Geologic Timescale

Front

What is the Geologic Timescale?

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 Era do we live in?

Back

Cenozoic Era.

Front

What type of environment was present during the Devonian Period?

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Mostly water.

Front

What are Epochs?

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Smaller chunks of time that divide periods in the Geologic Timescale.

Front

Which organisms are the most recent (closest to present day)?

Back

Primitive horses.

Front

When did woolly mammoths appear?

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During the Quaternary Period.

Front

What is the oldest Era in the Geologic Timescale?

Back

Pre-Cambrian Era.

Front

What major event marks the end of the Mesozoic Era?

Back

The mass extinction event that wiped out the dinosaurs.

Front

What is the significance of the Paleozoic Era?

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

Front

What is a Period in the Geologic Timescale?

Back

A subdivision of an Era, characterized by specific geological and biological events.