Ordovician Period
Devonian Period
Permian Period
Triassic Period
Cretaceous Period
100

The Earth was covered in this during this time period?

What is water

100

What developed lobed fins and was the first animal to walk on land?

What is a fish?

100

Plants started to bear these during this time period.

What are seeds?

100

This kind of environment took place on land during this time period.

What is arid and dry?

100

Plants gained this during this time period.

What are flowers?

200

What is the animal that arrived during this time period called? (animal with backbone)

What is a vertebrate?

200

What did the fish that walked on land evolve into?

What is an amphibian? 

200

This kind of animal became more common during this time period.

What is a reptile?

200

This kind of environment took place around riverbeds during this time period.

What is moisture rich?

200

These animals roamed the Earth during this time period.

What are Dinosaurs?

300

This time period with a wipe out of a complete species. What is this process known as?

What is Mass Extinction?

300

This other type of animal could live on land during this time period.

What is an invertebrate?

300

Blank out of 4 species became extinct during this time, and blank % of sea biodiversity disappeared during this time. 

What is 3 out of 4 and 96%?

300

This animal roamed the Earth during this time period.

What is Archosaurs?

300

What other animal evolved during this time period?

What are insects? 

400

What caused the mass extinction during this time period?

What is plate tectonic movement?

400

Terrestrial plants became this during this time period.

What is biodiverse? 

400

This caused the mass extinction of this time period to happen.

What is an excessive increase of greenhouse gasses, lack of oxygen, and increase of mercury levels in the water?

400

This level riding in the ocean contributed to the mass extinction of this time period.

What is acid levels?

400

What major event started to take place during this time period?

What is continental drift? 

500

What event concluded this time period?

What is Sea level decreasing and land formation?

500

This time period ended in this.

What is mass extinction? 

500

This time period ended with this kind of Earth environment.

What is sea level rising and volcanoes erupting?

500

This land event contributed to the mass extinction of this time period.

What is volcanic eruptions?

500

This hit  Earth during this time period causing a mass extinction.

What is an Asteroid?