Highest percentage of intact dinosaur remains

'Leonardo', the fossilised remains of a 77 million-year-old duck-billed dinosaur, was discovered in northern Montana in the summer of 2000. The 7 m-long brachylophosaurus is the forth dinosaur ever discovered to be classified as a mummy. 90% of its body is covered in fossilised soft tissue, including skin, muscles, scales, footpads, and even its last meal preserved in its stomach. The creature was around 3-4 years old when it died.