Geological Time Scale

Front

What is the law that states rocks are always deposited flat first?

Back

Law of Original Horizontality

Front

What are preserved remains or traces of animals, plants, and other organisms from the remote past?

Back

Fossils

Front

Which era marks the time of the large mammals and humans?

Back

Cenozoic

Front

What is the name of a scientist that studies fossil remains to understand primitive life forms?

Back

Paleontologist

Front

Which era marks the creation of Pangea?

Back

Paleozoic

Front

What is the law that states that in undisturbed sedimentary rock layers, the oldest layers are at the bottom?

Back

Law of Superposition

Front

What is the term for the process of determining the age of rocks and fossils?

Back

Dating

Front

What is the geological time scale?

Back

A system of chronological dating that relates geological strata to time.

Front

What are the three major eras of the geological time scale?

Back

Paleozoic, Mesozoic, Cenozoic

Front

What is the significance of the Mesozoic era?

Back

It is known as the age of reptiles, including dinosaurs.