This is the most broad unit for geologic time.
Hint: there's only 2 categories for this unit
What is EON?
100
EON we are currently in....
What is Phanerozoic?
100
Describe life in the Paleozoic....What's the difference between the Cenozoic and the
What is -ancient life, started with ocean life, then moved to the land; invertebrates, fish, plants
100
The type of evidence in which a part of or an entire organism is completely preserved...
What is ORIGINAL PRESERVATION?
200
This is the second largest unit of geologic time
What is ERA?
200
Era we are currently in....
What is CENOZOIC?
200
Describe life in the Mesozoic era....
What is age of reptiles, tropical climate, warm, lush plants; amphibians, reptiles, dinosaurs, dinosaurs became extinct at the end of the era
200
3-D shaped fossil that looks like the organism...
What is CAST?
300
This is the 3rd largest unit of geologic time
What is PERIOD?
300
Period we are currently in....
What is QUATERNARY?
300
Describe life in the Cenozoic....
Hint: we are currently in this era
What is age of mammals, cooler climate; mammals, modern man
300
Fossil that involves only an Impression of the organism...
NOT 3-D
What is MOLD?
400
This is the 4th (or most specific) unit of geologic time
What is EPOCH?
400
EPOCH we are currently....
What is HOLOCENE?
400
The main differences between the Precambrian and Phanerozoic EON...
What is ...
a) Precambrian Eon
Characteristics: Hot, Volcanoes, No Life
b) Phanerozoic Eon
Beginning of Life, Lush plants and animals
400
Type of fossil evidence that included indirect fossil evidence of an organism like footprints, worm trails, tunneling, burrows
What is TRACE fossil?
500
These are the 2 big EONS.
What are Precambrian and Phanerozoic?
500
The significance of the CARBONIFEROUS Period...
What is lots and lots and lots of plant growth which eventually died and turned into the COAL supply we have today? (Coal is made from Carbon....Carbon comes from things that were once living....like Plants)
500
The EON and percentage of geologic time when the earth was hot, filled with volcanoes, the plates and continents were forming and living things were not really present....
Hint: there are 2 answers
What is Precambrian and 90%?
500
3 criteria (or 4) that need to be met to make something an
Index Fossil...
What is....
-are easily recognized
- abundant
-widely distributed geographically
-existed for relatively short periods of geological time