Without plants and animals, our lives would not be possible. Oxygen, clean water and soil, and our earliest tools, food, and clothing came from flora and fauna. Even our fossil fuels are the result of Paleozoic Era ecosystems that captured the sun's energy-the same energy that we are now using billions of years later.
Results for paleozoic era animals
In the aftermath of the extinction that marked the end of the Paleozoic Era, 252.6 million years ago, reefs made by multicellular animals took less than two million years to reappear and diversify. Until now, it was thought that recovery had taken around ten million years.