The Boston Globe, April 28, 2008
Link
Casey Dunn has gathered his share of weird animals. He dredged up sea spiders that live around the docks in Waikiki. He dived to the sea floor to scoop up mud, in search of bizarre, spiny creatures called kinorhynchs that are smaller than a grain of sand.
Dunn, a biologist at Brown University, hunts for weird animals to get his hands on their DNA. Hidden in their genes is a record of the history of the entire animal kingdom, some 700 million years of evolutionary change.
By analyzing the DNA of dozens of different kinds of animals, he and his colleagues have made some astounding discoveries about animal evolution. For one thing, the common ancestor of all living animals may have been more complicated than once thought.
Continue reading “Tree of life continues to evolve” →