TIME SCALE REVIEW

TIME

• These are the sections of time.
• Eons
• Epochs
• Periods
• Eras

Timeline

• Earth forms.
• First organisms in water.
• Earliest animals with shells.
• First fish.

Continued...

• First organisms on land.
• First insects.
• First dinosaurs.
• Pangea breaks up.

Continued...

• First flowering plants on land.
• Dinosaurs die off.
• Himalayan Mountains form.
• Last Ice Age ends.

The geologic scale is a record of the life forms and geological events in Earth's history.
Today were are in the Holocene Epoch of the Quaternary Period of the Cenozoic Era.