Great Ordovician Biodiversification Event | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-06-07

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Ordovician_radiation


00:01:11 1 Causes
00:03:35 2 Effects
00:06:11 3 See also



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SUMMARY
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The Ordovician radiation, or the great Ordovician biodiversification event (GOBE), was an evolutionary radiation of animal life throughout the Ordovician period, 40 million years after the Cambrian explosion, whereby the distinctive Cambrian fauna fizzled out to be replaced with a Paleozoic fauna rich in suspension feeder and pelagic animals.It followed a series of Cambrian–Ordovician extinction events, and the resulting fauna went on to dominate the Palaeozoic relatively unchanged.
Marine diversity increased to levels typical of the Palaeozoic, and morphological disparity was similar to today's.
The diversity increase was neither global nor instantaneous; it happened at different times in different places.  Consequently, there is unlikely to be a simple or straightforward explanation for the event; the interplay of many geological and ecological factors likely produced the diversification.