Early Paleozoic
Mesozoic
Cenozoic
Diagram
Random
100
This Era contains what three life forms? (Name two)
Fish, Invertebrates, amphibians
100
What were the most common life-forms found during the Mesozoic Era?
Dinosaurs
100
This era is called the age of mammals because...
Mammals were very abundant during this time.
100
True or False: Each Era has the same number of years.
False
100
The disappearance of many species over a short period of time is called...
Mass Extinction
200
This mountain range was formed during this era.
Appalachian Mountains
200
What was the climate like during this era?
Warm
200
This Era contains what two types of life forms?
Mega-Mammals and Humans
200
Which geologic time period is the oldest?
Cambrian
200
The Pangea was called a ____.
Supercontinent
300
The climate during this era was ____.
Warm
300
Plate collisions during this era formed what mountain range?
Rocky Mountains
300
What two periods are associated with this Era?
Tertiary
Quaternary
300
How many periods are in the Paleozoic era?
Six
300
Gouges made by rocks carried in glaciers are called ____.
Glacial Grooves
400
True or False: The Pangea formed during this era?
True
400
Which geologic event occurred during this era?
Breakup of the Pangea
400
What was the climate during this era?
T- Warm
Q- Ice Age then warm
400
Which unit of geologic time is the longest?
Eon
400
What was formed in cool, wet climates?
Coal Beds
500
This Era developed during the ______ Explosion.
Cambrian
500
What covered Earth's continents during this time?
Inland Seas
500
Fossils from this Era are found in what three things? (Name two)
Rocks, Tar pits, Glaciers
500
Which unit of geologic time is the shortest?
Epoch
500
What connects two continents that were previously separated?
Land Bridges