Geological Timeline

Front

What is the current geological era we are living in?

Back

Cenozoic Era

Front

How old is the Earth?

Back

Approximately 4.6 billion years old.

Front

What is the main purpose of the geologic time scale?

Back

To organize the major eras of Earth's history.

Front

What event typically marks the end of a geological era or period?

Back

Mass Extinction.

Front

Which geological era is known for the existence of dinosaurs?

Back

Mesozoic Era.

Front

What are the three major geological eras?

Back

Paleozoic, Mesozoic, and Cenozoic.

Front

What is the Precambrian Time?

Back

The earliest part of Earth's history, covering about 88% of Earth's timeline.

Front

What significant event occurred at the end of the Paleozoic Era?

Back

The Permian-Triassic extinction event.

Front

What type of organisms dominated the Mesozoic Era?

Back

Dinosaurs and early mammals.

Front

What is a mass extinction?

Back

A widespread and rapid decrease in the biodiversity on Earth.