Mammalian Diversification
Wherein we attempt to figure out our origins. Check out the other 9 Unanswered Science Questions! http://youtu.be/UFydagCS9fg Veritasium - http://www.youtube.com/1veritasium (http://www.youtube...
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Without a fossil representation, how do we know that placental mammals share a common ancestor? Well, today we're gonna talk about mammalian diversification. Sixty-five million years ago a mass extinction event occurred that wiped out 70% of all life on the planet. Until recently, evolutionary biologists believed that it was because of this mass extinction event that placental mammals were able to go on, to evolve, diversify and become a globally dominant vertebrate group. Because there were suddenly a lack of predators and no longer competition for major food sources, the world essentially became a major all-you-can-eat buffet. Mmmm. Buffet. So, mammals were able to diversify and occupy new niche little areas of the environment that had previou...
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Without a fossil representation, how do we know that placental mammals share a common ancestor? Well, today we're gonna talk about mammalian diversification. Sixty-five million years ago a mass extinction event occurred that wiped out 70% of all life on the planet. Until recently, evolutionary biologists believed that it was because of this mass extinction event that placental mammals were able to go on, to evolve, diversify and become a globally dominant vertebrate group. Because there were suddenly a lack of predators and no longer competition for major food sources, the world essentially became a major all-you-can-eat buffet. Mmmm. Buffet. So, mammals were able to diversify and occupy new niche little areas of the environment that had previou...
