2019-12-19 09:08:09.0 [tstevens] insert Definition (id: null text: The Paleozoic Era, which ran from about 542 million years ago to 251 million
years ago, was a time of great change on Earth. The era began with the breakup of
one super-continent and the formation of another. Plants became widespread. And the
first vertebrate animals colonized land. language code: en);
The Paleozoic Era, which ran from about 542 million years ago to 251 million years
ago, was a time of great change on Earth. The era began with the breakup of one super-continent
and the formation of another. Plants became widespread. And the first vertebrate animals
colonized land.