About 90 percent of all species became extinct at the end of this period, although there were no meteorite collisions and only some volcanic activity in Siberia.
By the end of this period, reptiles greatly outnumbered amphibians. Bony fishes radiated and the largest insects ever found proliferated. About 90 percent of all species became extinct at the end of this period, although there were no meteorite collisions and only some volcanic activity in Siberia. Formation of large glaciers caused the sea level to drop, drying out shallow sea habitats. For 10 points, name this geological period lasting from 290 to 245 million years ago, coming after the Carboniferous, the last period of the Paleozoic era.
By the end of this period, reptiles greatly outnumbered amphibians.
{Permian}