Extinctions: Past and Present Week 2 - Setting the stage for the diversity of life

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Abstract
In this video, Professor Anusaya Chinsamy-Turan outlines the topic of two major extinction events that will be discussed in subsequent videos: the end of the Ordovician and the end of the Devonian. She introduces Tetsuto Miyashita who will talk about the diversification of early vertebrates and the origin of jawed fishes. She then introduces Rob Guess who talk talk about the diversity of fossils present in a locality in South Africa.
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