It may have weighed twice as much as a blue whale because of its dense bones. That's nearly as heavy as a Boeing 747 or twice as much as a blue whale, which typically weighs between 72 and 180 tons. That means the other fossils retrieved from the area may not offer clues to how P. colossus lived. A 3D model shows what a complete skeleton of Perucetus colossus would look like, above a blue whale and smaller Cynthiacetus peruvianus skeletons. No limbs were found near the P. colossus skeleton, but fossilized evidence suggests it likely had both front and back legs.

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Persons: Mario Urbina, Olivier Lambert, Giovanni Bianucci, Cynthiacetus, colossus, colossus isn't, Lambert, Florent Goussard, Marco Merella Organizations: Service, Boeing, Santa Barbara Museum of, History Locations: Wall, Silicon, Pisco, Peru, London