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USGS CMG InfoBank: Mass Extinction Survivors

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Comment: 13:02 - 13:58 (00:56)
Source: Annenberg/CPB Resources - Earth Revealed - 11. Evolution Through Time
Keywords: "Stanley Aramic", extinction, Paleozoic, Mesozoic, environment, fossil

Our transcription: The small percentage of species that survived the mass extinction at the end of the Paleozoic inhabited a world of opportunities moving into environments now free of competitors.
The fossil record suggests that individual species gave rise to a multitude of new life forms each well suited to its particular environment.
Mass extinctions have occurred throughout the history of life.
The impact of these mass extinctions in some ways could be viewed almost as taking out a lot of organisms and allowing for newer organisms to evolve and repopulate the Earth with different species.
The arrival of new species in the aftermath of the Paleozoic mass extinction heralds the next geologic era, the Mesozoic.

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