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540 BCE
Cambrian 541-485 MYA
This was the first recorded geological period of the Paleozoic era and lasted about 53 million years. During this period of time, Trilobites were the dominant species and a dramatic burst of evolution within the earth has changed and was known as the "Cambrian explosion". -
485 BCE
Ordovician 488-443 MYA
The evolution was still occurring and the earth was mostly covered in water and Trilobites were still the dominant species. -
443 BCE
Silurian 443-416 MYA
The environment has drastically changed and new marine life such as coral reefs are making their first appearance. -
419 BCE
Devonian 416-358 MYA
Marine life is now evolving and fishes such as the Tiktaalik have began "walking" on the bottom of shallow waters. -
359 BCE
Carboniferous 358-299 MYA
Vast swamps have now appeared and swamps eventually produced carbon. -
298 BCE
Permian 299-215 MYA
Largest mass of extinction ever recorded has occurred and the start of the supercontinent Pangea has begun. Due to the continents emerging the climate has severely changed. -
251 BCE
Triassic 215-199 MYA
This was the beginning of the Mesozoic era and during this era, it was filled with violent volcanic eruptions, climate change, and the asteroids hitting the earth, wiping out 90% of the earth's species. -
199 BCE
Jurassic 199-145 MYA
The supercontinent Pangea split apart. -
145 BCE
Cretaceous 145-66 MYA
Modern mammals started appearing, Flowering plants began forming, and a mass extinction among the dinosaurs. -
65 BCE
Tertiary 66-2 MYA
The beginning of the Cenozoic era, During this period earth's climates were generally warm and mild. In the vast oceans, marine mammals such as whales and dolphins begin to evolve. -
2 BCE
Quaternary 2-.012 MYA
This was the beginning of an Ice age and it was often known as the "Age of humans". The continents have moved around a bit and is the same as it is today.
