Which list is in order from LARGEST to smallest?

Which unit is divided into eras?

Which unit is divided into epochs?

Earth's history divided into units of time

Which unit is divided into periods?

Which of the below are the three eras?

List the eras in order from first (oldest) to last (most recent).

Which of the below is the era in which the first period occurs?

Which of the below is the first period of the Geologic Time Scale?

Identify the eon in which we live.

Identify the era in which we live.

Identify the period in which we live.

Identify the epoch in which we live.

What is the timespan before the Paleozoic Era?

Which unit of time is the earliest and longest unit?

Flowering plants are most common.

Appearance of flowering plants

Simple mosses and ferns

Which era witnessed the appearance of small mammals, birds, and was dominated by the dinosaurs?

Which era witnessed the appearance of early invertebrates, fish, arachnids, insects, amphibians, and reptiles?

Which era ended with the mass extinction of marine invertebrates?

Which era witnessed the appearance of new mammals and humans?

Which era ended with the mass extinction of the dinosaurs?

Which era were flowering plants most common?