Move over, blue whale! Perucetus colossus, a basilosaurid whale that lived 39 million years ago, may have been the biggest animal ever. It has the heaviest skeleton ever found, which may make it the new largest animal of all time.
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Sources:
https://www.naturalsciences.be/en/news/item/22692/
https://www.nature.com/articles/s41586-023-06381-1
https://www.nature.com/articles/d41586-023-02408-9
images and paper links here, login required https://press.springernature.com/a-heavyweight-early-whale-pushes-the-boundaries-of-vertebrate-mo/25848990
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