1. | Devonian period | - | Age of fishes |
2. | Carboniferous period | - | Age of amphibians |
3. | Ordovician period | - | Age of invertebrates |
4. | Cretaceous period | - | Age of reptiles |
1. | Gymnosperms are dominant plants and first birds appear |
2. | Dianosaurs become extinct and gymnosperms appear |
3. | Flowering plants disappear |
4. | Radiation of reptiles and origin of mammal-like reptiles |