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A hippopotamus-like creature swims underwater

Article

Flippers or Feet? An Extinct Mammal May Have Been Replaced By Today's Sea Cows

August 2016

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Blue whale skull being installed at National Museum of Natural History.

Article

When Did Today’s Whales Get So Big?

July 2016

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An illustration of a recently discovered species of Monodontid, Bohaskaia monodontoides, and its beluga and narwhale relatives

Article

Smithsonian Scientists Describe a 'New' Fossil Whale

March 2012

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