Home Page Facts
What is the oldest geologic time eon?
Hadean
4.5 billion years ago
What is the start of the Precambrian time
The Mesozoic Era was know as the age of ______.
Dinosaurs
Event where many species died off at the same time.
Mass Exinction
Which time division makes up 88% of erath's history?
Precambrian
"Age of Ancient Life"
What is the nickname for Paleozoic time
Which method can be used to date absolute age of rocks.
Radiometric dating.
Era known as "age of mammals."
Cenozoic Era
Of the following, which is the earliest form of life: dinosaurs, flowing plants, cyanobacteria, mammals
cyanobacteria
What is the oldest period of the Mesozoic Era.
Triassic Period
The beginning of this era
What is 65 million years ago
Era known as "age of dinosaurs."
Mesozoic Era
Oldest Period of the Paleozoic Era.
Cambrian
How many periods during the Mesozoic Era?
3 - Triassic, Jurassic, & Cretaceous periods
Massive landmass that was known as a suppercontinent about 300 million years ago.
Pangea
This term means "ancient life."
Paleozoic
What is the number one reason that caused mass extinction.
Climate
What era is know as the era of recent life?
Cenozoic Era
In which period did the first trilobites appaer?
Cambrian period