SciShow
7 Animals We Used to Think Were Extinct (But Aren't!)
Species that no longer exist vastly outnumber those that currently populate the planet, but occasionally we rediscover a species we thought was extinct!
Howard Hughes Medical Institute
Hhmi: Bio Interactive: The Origin of Species: Lizards in an Evolutionary Tree
In the Caribbean Islands, adaptation to several common habitats has led to a large adaptive radiation with interesting examples of convergent evolution. [17:45]