110M year-old nodosaur is the best-preserved fossil of its kind (2017)
> it was an enormous four-legged herbivore protected by a spiky, plated armor. It weighed approximately 3,000 pounds.<p>> To give you an idea of how intact the mummified nodosaur is: it still weighs 2,500 pounds!<p>How does it weight less as a stone fossil than as an organic life form mostly made of water?<p>Most stone is 2-3 times as dense as water<p><a href="https://www.thoughtco.com/densities-of-common-rocks-and-minerals-1439119" rel="nofollow">https://www.thoughtco.com/densities-of-common-rocks-and-mine...</a>