SMN Weekly – Missing link in hippopotamus evolution discovered

February 26, 2015 1:20 AM

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Paleontologists have finally closed a persistent gap in the evolutionary history of the hippopotamus, revealing that the massive animal comes from a distant relative that was only one-twentieth the size of a modern specimen.

For a long time, hippos were believed to share ancestry with whales, yet fossil record gaps have prevented scientists form forging any definitive links between the two species. However, paleontologists have uncovered a brand-new species in Kenya dating to 30 million years ago that helps to reintegra...

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