Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards
share
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

GEOLOGIC TIME

TermDefinition
What is another name for the Precambrian Eon? Before Life
What is another name for the Paleozoic Era? Old Life
What is another name for the Mesozoic Era? Age of the Reptiles
What is another name for the Cenozoic Era? Age of the Mammals
How long ago was the Precambrian Eon? 4.6 billion to 543 million years ago
How long ago was the Paleozoic Era? 543 million to 248 million years ago
How long ago was the Mesozoic Era? 258 million years ago
What is the Cenozoic Era? The era we are currently living in
How long ago was the Cenozoic Era? 65 million years ago
When did man first appear? 500,000 years ago
What is the largest division of geologic time? Eon
What is the second largest division of geologic time? Era
What is the third largest division of geologic time? Period
What is the smallest division of geologic time? Epoch
What type of animals flourished in the Paleozoic Era? Marine
How did the Paleozoic Era end? With a mass extinction the nearly killed 90% of all species
What happened at the end of the Mesozoic Era? 15% to 20% of the species became extinct
What types of animals lived at the end of the Mesozoic Era? Dinosaurs, small mammals, and birds
What types of animals lived at the end of the Paleozoic Era? Amphibians, reptiles, and insects
What period are we in right now? Quaternary
Created by: littleduck14