40-million-year-old giant whale weighs less than expected :

The huge, 17-meter-long whale, was believed to weigh 340 metric tons – the equivalent to 150 cars piled on top of one another.

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Peru , United States , Italy , American , Ryosuke Motani , Nick Pyenson , University Of California Uc Davis , Smithsonian Institution , Uc Davis Department Of Earth , Smithsonian Institute National Museum Of Natural History , Planetary Sciences , James Gamble , Ica River Valley , Smithsonian Institute National Museum , Natural History , Oology , Marine Biology , Iology , Natomy , Paleontology , Ydrography ,