Paleozoic Era
The first period of the Paleozoic era which is known for the appearance of the first trilobites.
What is the Cambrian Period?
This marked the end of the Mesozoic Era.
What is a meteor (Chicxulub)?
___ million years ago the Cenozoic Era began.
What is 66 mya?
Shells, petrified trees and leaf impressions.
What are fossils?
The Cambrian, the Ordovician, the Silurian, the Devonian, the Mississippian, the Pennsylvanian, the Permian.
What are the periods of the Paleozoic Era?
The Era known as the age of the dinosaurs.
What is the Mesozoic Era?
The Cenozoic Era is also known as the age of ______.
What is Mammals?
The study of prehistoric history.
What is Paleontology?
The Permian Extinction.
What mass extinction ended the Paleozoic Era?
The first true mammals appeared during this period.
What is the Triassic Period?
The periods of the Cenozoic era.
What are Tertiary & Quaternary?
A type of fossil that results from an impression that no longer contains the original remains.
What is mold?
The organism that appeared in the Ordovician period which is used to characterize it.
What is fish?
This giant plant-eating dinosaur, known for its long neck and tail, roamed during the Jurassic period and was a member of the sauropod group
What is a Brachiosaurus?
The current period that we are in.
What is Quaternary?
The process when minerals replace original remains.
What are replaced remains?
The Paleozoic era is also known as the age of _______.
What are invertabrates?
The autotroph that first appeared in the Cretaceous period.
What is flowering plants?
___ epochs make up the Cenozoic era.
What is 7?
______ can remove original remains and replace them with minerals to form a cast.
What is groundwater?