Extinctions: Past and Present Week 2 - The effect of extinctions

In this video, Professor Anusaya Chinsamy-Turan reflects on the first and second mass extinction events that were discussed in previous videos. She discusses the topics covered in the previous week of the MOOC, specifically around the radiation of tetrapods and the development of bony fishes. She reflects on some of the specific effects these events had and introduces the topic of the End Permian extinction to be discussed in subsequent videos. This is video 6 in Week 2 of the Extinctions: Past and Present MOOC.