When was the Archreon era?

What does Archron mean?
(extra info)

What did the Archeon era provide to allow the first lifeforms to be created?

What were the first lifeforms on the earth?

What was the era called that started around 2500 bc (or 2100/ 2400 mya)?

What does Proterozic mean?
(extra info)

Where were the rocks from this era found?
(extra info)

What allowed life in the Proterozic era to become more diverse?

What sort of organisms can be found in the Proterozic era?

When was the Phanerozonic era?

What sort of organisms were found in the Phanerozonic era?

What was significant about the Phanerozonic era?

What are the three groups in the Phanerozonic era?

In the Phanerozonic era, what species
developed within this era?
What was the effect of this development on the earth?

What are prokaryotes?

What are Eukaryotes?

What are the three periods that
divided the Early Palaeozonic stage?

What are the three periods that
divided the Late Palaeozonic?

What are the three periods that
divided the Mesozonic?

What are the three periods that
divided the Cenozoic?

What percentage of rocks can
preserve fossils?

What percentage of fossils are
aquatic?

What is the ratio of species that have been fossilised.

What kind of animal did the
Cambrian era contain?

What is the Cambrian explosion?

During the Cambrian explosion, what was evolved?

What type of plants could be found in the Cambrian era?

What happened at the end of the Cambrian period?