Paleozoic
The Paleozoic Era is often referred to as...
What is Fish?
This era is known as the..
What is 'Age of Reptiles'?
This era is known as the...
What is 'Age of the mammals'?
define relative-age dating
What is determining the age of a rock by its layers
layers of rock
what is strata
The first fish appeared within what period within this era?
What is Cambrian Period?
The landmass ______ split into the continents we know today
What is Pangaea?
The rise of _______ came from the Cenozoic Era
What is humans?
The law of superposition is...
what is oldest layers on bottom, youngest layers on top
a biological community of interacting organisms
what is ecosystem
The major event that ended the Paleozoic Era?
What is the 'explosion of life'?
This significant event ended the Mesozoic Era
What is asteroids?
This significant clime event occurred during this era
What is Ice Ages?
_______ is when one rock contains pieces of another rock
what is inclusions
most/all of earth continental blocks to form a large, single landmass
what is supercontinent
This group of organisms dominated land during the late Paleozoic Era
What is amphibians?
Which is the cause for life to grow extremely large during this era?
What is increased oxygen?
The largest land mammal during this time is called
what is wooly mammoth
This feature cuts across another feature
The study of earths physical structure
what is geologic
These fossils make up more than 56% of Paleozoic's ancient life
What is Trilobites
Which period in the Mesozoic is known for the first birds appearing
What is Jurassic?
the cenozoic era was how many millions of years ago
what is 66 million
Original horizonatality is when rock layers are deposited into __________ layers
what is horizontal
study of rock layers
what is stratigraphy