Geologic Timeline Flashcard 2025

Front

What are the four eras in order from oldest to youngest?

Back

Precambrian, Paleozoic, Mesozoic, Cenozoic

Front

Which example timeline best represents Earth's history?

Back

Timeline D

Front

A fossil is any preserved remains, impression, or trace of any once-living thing from a past geological age. True or False?

Back

True

Front

What era are we currently in?

Back

Cenozoic

Front

Which came first: Trilobites are one of the dominant species on Earth, Amphibians leave the water, The age of reptiles, or Early humans arise on Earth?

Back

Trilobites are one of the dominant species on Earth

Front

What is the definition of the Precambrian era?

Back

The earliest part of Earth's history, covering about 88% of geological time, before the Cambrian period.

Front

What significant events occurred during the Paleozoic era?

Back

The emergence of fish, amphibians, and the first land plants.

Front

What does the term 'Mesozoic' refer to?

Back

The era known as the 'Age of Reptiles', which includes the Triassic, Jurassic, and Cretaceous periods.

Front

What major event marks the end of the Mesozoic era?

Back

The mass extinction event that led to the demise of the dinosaurs.

Front

What is the significance of the Cenozoic era?

Back

It is known as the 'Age of Mammals', where mammals and birds became the dominant land animals.