Paleozoic Era
Mesozoic Era
Cenozoic Era
Precambrian Era
100
Where did some lifeforms move to during this era?

What is the land?

100

What well known group of species appeared during this era?

What are the dinosaurs?

100

What well known group of species went extinct at the end of this era?

What are the dinosaurs?

100

Where did life begin during this era?

What is the ocean?

200

What is the nickname for the large extinction event that happened during this era?

What is the great dying?

200

How long ago did the mesozoic era start?

What is 252 million years ago?

200

What is a nickname for the Cenozoic Era?

What is the age of mammals?

200

What large global event caused the mass extinction at the end of this era?

What is an ice age?

300

What percentage of the species on earth at the time went extinct during the well known mass extinction event during this era

What is 90%?

300

What is the name of the period that falls in the middle of this era?

What is the jurassic period?

300

The collision of which two tectonic plates created the Himalayas?

what are the Indian and eurasian plates?

300

Approximately what percentage of earth's history does this era comprise?

What is 90%

400

What is the name of the event that caused an explosion of life and diversity during this era?

What is the Cambrian explosion?

400

What group of flying reptiles are commonly confused as dinosaurs

What are Pterosaurs?

400

Which modern continent was rifted away from the antarctic plate?

What is Australia?

400

What eon during the Precambrian era did eukaryotes appear?

What is the Proterozoic era?

500

What period during the Paleozoic did the trilobites go extinct?

What is the Permian period? 

500

What period during this era did the first dinosaurs emerge?

What is the triassic period?

500

Which epoch during this era is known for its repeated ice ages?

What is the Pleistocene?

500

What caused the great oxidization?

What is cyanobacteria?

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