In life, this creature was nearly 20 feet long and 1.5 tons. When it died, it quietly floated out to sea and subsequently drifted to the ocean floor where it was quickly entombed, preserved in a state of suspended animation for over 100 million years. Now, the front half of its body is preserved as an even heavier slab of rock with unbelievably detailed features that have been revealed after over 7,000 hours of laborious preparation work.