* Ordovician
* Silurian
* Late Devonian
* Permian
* Triassic
* Cretaceous
* Tertiary
Here's a bit more about each:
* Ordovician (485.4 - 443.8 million years ago): Known for the diversification of marine life, including the rise of early vertebrates.
* Silurian (443.8 - 419.2 million years ago): Marked by the colonization of land by plants and arthropods.
* Late Devonian (382.7 - 358.9 million years ago): A period of significant evolutionary innovation, including the development of tetrapods (animals with four limbs).
* Permian (298.9 - 252.17 million years ago): Saw the rise of reptiles and the formation of the supercontinent Pangaea. It ended with the largest known mass extinction event.
* Triassic (252.17 - 201.3 million years ago): Marked by the recovery of life after the Permian extinction. The first dinosaurs emerged during this period.
* Cretaceous (145 - 66 million years ago): Dominated by dinosaurs, with the rise of flowering plants. It ended with the extinction of the dinosaurs, likely caused by an asteroid impact.
* Tertiary (66 - 2.58 million years ago): This era is now divided into the Paleogene and Neogene periods, and is marked by the diversification of mammals and the appearance of the modern world's continents.
Let me know if you want to learn more about any specific period!
