My question after reading this piece -— How are soft tissues preserved after MILLIONS of YEARS ? It’s amazing to see that DNA and protein can last for 80 to 150 million years.
I believe the paleontologists didnt expect to find soft tissue. It must have been a pleasant surprise ( a bonus ) to find them.
I suspect that "soft tissue" is a misnomer, and what's left is no more the original soft tissue than skeletal fossils are the original bones.