Earth's Eras

Age of fish was during this era:

• Cenozoic

• Mesozoic

• Paleozoic

Tags

NGSS.MS-LS4-1

Modern mammals was during this era:

• Cenozoic

• Mesozoic

• Paleozoic

Age of reptiles was during this era:

• Cenozoic

• Mesozoic

• Paleozoic

Tags

NGSS.MS-LS4-2

The earliest part of Earth's history is called the:

• Cenozoic

• Cambrian

• Holocene

• Precambrian

Tags

NGSS.MS-ESS1-4

90% of Earth’s history occurred during which era?

• Precambrian

• Paleozoic

• Mesozoic

• Cenozoic

Tags

NGSS.MS-ESS1-4

During which era did the Earth spend the majority of its age?

• Precambrian

• Paleozoic

• Mesozoic

• Cenozoic

Tags

NGSS.MS-ESS1-4

90% of Earth’s history occurred during which time?

• Precambrian

• Paleozoic

• Mesozoic

• Cenozoic

Tags

NGSS.MS-ESS1-4

Trilobites serve as good _________ for various intervals of the Paleozoic era. This is because these species lived during a specific time span. 

• Index fossil

• Mammals

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

After Precambrian time, Earth's history is divided into three eras, beginning with the

• Paleozic Era

• Mesozoic Era

• Cenozoic Era

Tags

NGSS.MS-ESS1-4

The current era is the Cenozoic era, and the current period is the ______ period

• Quaternary

• Cambrian