Geologic Time Flashcard

Front

What is the Age of the Reptiles?

Back

Mesozoic

Front

What supercontinent broke up at the end of the Mesozoic era, leading to increased diversity on Earth?

Back

Pangea

Front

What significant change in life marked the beginning of the Paleozoic era?

Back

The development of hard parts and exoskeletons.

Front

In which era were dinosaurs the dominant species?

Back

Mesozoic

Front

What is the correct order of the parts of the geologic time scale from broadest to narrowest?

Back

Eon, Era, Period, Epoch.

Front

What era follows the Paleozoic era?

Back

Mesozoic.

Front

What are the three major divisions of the geologic time scale?

Back

Eons, Eras, Periods.

Front

What is the significance of the Cambrian explosion?

Back

It marks a rapid diversification of life forms and the appearance of most major animal phyla.

Front

What is the primary characteristic of the Cenozoic era?

Back

It is known as the Age of Mammals.

Front

What major event marks the end of the Mesozoic era?

Back

The mass extinction event that wiped out the dinosaurs.