Quotes About Paleozoic

Trilobites survived for a total of three hundred million years, almost the whole duration of the Palaeozoic era:

The Paleozoic was followed by the Permian extinction, when 95 percent of all life on Earth—plants and animals on both land and sea—died. Just like that. Just when they were beginning to get the hang of it. (To be fair, the period of extinction lasted millions of years, so "just like that" is an exaggeration, but scientists still don't know for sure why it happened.)