Geological Time Scale Flashcard

Front

Which of the following eras are the longest in the geologic time scale? Options: Precambrian Time, Paleozoic Era, Mesozoic Era, Cenozoic Era

Back

Precambrian Time

Front

Which of the following time periods are the oldest in the geologic time scale? Paleozoic Era, Mesozoic Era, Precambrian Time, Cenozoic Era

Back

Precambrian Time

Front

Which rock layer is the newest?

Back

A

Front

Which fossil is older than the fish fossil?

Back

D

Front

A major event that happened during Precambrian Time was

Back

The first life appeared on Earth (one-celled animals, bacteria, jellyfish).

Front

A major event that happened during the Paleozoic (early life) Era was: Formation of the supercontinent, Pangaea

Back

Formation of the supercontinent, Pangaea

Front

A major event that happened during the Mesozoic (middle life) Era was

Back

Complex life: dinosaurs, small mammals, birds, conifers, and flowering plants

Front

A major event that happened during the Cenozoic (late life) Era was

Back

Development of large mammals including human beings

Front

remains of an organism that lived in the past

Back

fossils

Front

the end of a group of organisms

Back

mass extinction