Busy. Please wait.
Log in with Clever

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever

Username is available taken
show password

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.
Your email address is only used to allow you to reset your password. See 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.
Didn't know it?
click below
Knew it?
click below
Don't Know
Remaining cards (0)
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

Timeline of Terror 1

Life, the Universe and Everything

Big Bang creates the universe 14 BYA
Formation of Earth 4.5-4.6 BYA
Formation of the moon 4.4-4.5 BYA
Formation of oldest terrestrial rocks 3.96 BYA
Formation of terrestrial rocks on all continents by this time 3.5 BYA
Cyanobacteria first appear on Earth 3.5 BYA
First fossils of living organisms formed 3.5 BYA
Formation of earliest stromatolites 3.4 BYA
Evolution of soft-bodied multicellular organisms 540-635 MYA
Evolution of hard-bodied organisms 540 MYA
Evolution of marine fish (by this time) 400 MYA
Evolution of transitional species between fish and tetrapods 375 MYA
Evolution of the amniotic egg 340 MYA
Evolution of large amphibians 330 MYA
End of Permian period; largest mass extinction in Earth’s history; formation of Pangaea II 250 MYA
Evolution of dinosaurs 230 MYA
Evolution of first mammals 200-250 MYA
Formation of Archaeopteryx fossil 155 MYA
Formation of birdlike reptilian fossils in China 110 MYA
Existence of mammalian ancestor of humans, cows, whales and bats 100 MYA
Apes and rodents diverge 80 MYA
Cretaceous period ends/Tertiary begins (K-T boundary); extinction of dinosaurs. 65 MYA
Evolution of primates 60-80 MYA
Terrestrial mammals begin to evolve into dolphins/porpoises/whales 50 MYA
Existence of last common ancestor of humans and chimpanzees 6-7 MYA
Australopithecus evolves in Africa 4.1 MYA
North and South America connect 3 MYA
Most recent Ice Age begins 2.8 MYA
First stone tools 2.6 MYA
Evolution of homo habilis 2.3 MYA
Evolution of homo erectus 1.8 MYA
Evolution of homo sapiens 200,000 years ago
Created by: minty_choco
Popular Miscellaneous sets




Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
restart all cards