New estimates put the world's heaviest animal on a diet. Perucetus colossus that lived 39 million years ago probably weighed as much as a modern whale.
Study published in Peer J by paleontologists from University of California-Davis and the Smithsonian Institution, who revised downwards the estimates published last August in Nature. Both studies are based on the analysis of fossil bones recovered in Peru in the current Ica desert, namely 13 vertebrae, 4 ribs and part of the pelvis.