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New study reveals how frogs flourished after dinosaurs croaked

A massive asteroid strike that wiped out the dinosaurs millions of years ago created room for frogs to colonize the Earth, said a study Monday that shows how frogs became among the most diverse vertebrates in the world. As many as 10 types of frogs are believed to have survived the mass extinction some 66 million years ago, which erased three-quarters of life on Earth, said the report in the Proceedings of the National Academy of Sciences. Of these survivors, just three major kinds of frogs went on to diversify and…