Precambrian
When did this era begin?
4.5 Billion years ago
What is the name of the body of land created by plate tectonics in this era?
Pangea
What animal group ruled the earth during this time period?
The Dinosaurs
When did this era end?
It hasn't!
What was the first major event of this era?
Formation of our solar system
What Super continent formed before Pangaea?
Gondwana
What did the plate tectonics do to the land during this time?
Began separating Pangaea into the modern continents
What is this era known for?
It's the "Age of Mammals"
What were the first living beings on earth called?
Single-celled Eukaryotes
How many mass extinction events occured during this Era?
Three
What are the names of the three periods that dominated this era?
Jurassic, Triassic, and Cretaceous
What prompted the start of this Era?
The extinction of the dinosaurs, about 65 million years ago
What major event caused the extinction of 90% of life on earth?
The Great Oxygen Event
What happened in the Cambrian Explosion?
Ocean life evolved, we got the world's very first land animals
What nickname does this era have? (hint: has to do with the animals)
The Golden Age of the reptiles
What are the three periods of this era called?
Paleogene, Neogene, and Quaternary
What percentage of earth's history falls under this era?
86%
What crazy event happened at the end of this era that almost wiped out all life on earth?
Permian Extinction Event
In what period did mammals first arrive on the scene?
Late triassic
What was created by geological changes during this era?
Mountain ranges, such as the Himalayans