Geologic Fact One:8964 copyright protection457ＰＥＮＡＮＡDqKzp4Fx3n 維尼

        Scientists break the geologic time scale into eons, eras, periods, and epochs. There's the Precambrian Time, the Paleozoic Era, the Mesozoic Era, and the Cenozoic Era.8964 copyright protection457ＰＥＮＡＮＡMkFqmTb5Du 維尼

        Dinosaurs lived during the Mesozoic Era. However, the extinction event that destroyed the dinosaurs was not the largest in all geologic history. The largest extinction was at the end of the Permian Period of the Paleozoic Era, 252 million years ago. Most scientists speculate that volcanic eruptions were a major source of this phenomenon.8964 copyright protection457ＰＥＮＡＮＡhYCearv7qD 維尼

216.73.216.82