tissue can be preserved. Whats the problem?
and I haven't seen this.
If it did happen, then I again don't see a problem. shyt happens.
How did scientists find soft tissue in dinosaur fossils?
http://science.howstuffworks.com/environmental/earth/geology/soft-tissue-dinosaur-fossil1.htm
......
Schweitzer did the opposite of what most paleontologists do with their specimens. Instead of preserving and protecting it, she destroyed it by soaking it in a weak acid. If the entire fossil had been made of rock, it would have dissolved completely. But in the terms used in Schweitzer's paper -- co-authored by Jennifer L. Whittmeyer, John R. Horner and Jan K. Toporski -- the acid
demineralized the specimen. After seven days, the demineralization process revealed several unexpected tissues, including:
- Blood vessels
- Bone matrix
- Small objects that appeared to be osteocytes, the cells that build bone
Just like the blood vessels in your body, the ones Schweitzer discovered in the fossil were hollow, flexible and branched. They were also transparent and full of "small round microstructures" [source:
Schweitzer, 3/25/2005]. These microstructures visually resembled red blood cells, but their precise nature is still unclear.
The tissue Schweitzer found was fibrous, stretchy and resilient --after being stretched, it returned to its normal shape.
Because the prevailing scientific theory links
dinosaurs and
birds from an evolutionary standpoint, Schweitzer and her team compared their samples to the bones of a dead
ostrich. They found the samples to be similar. When viewed with a scanning electron
microscope, the dinosaur's
cortical bone -- the dense part of the bone -- was almost indistinguishable from the ostrich's.
These aren't the only discoveries to have come from these particular fragments of
T. rex bone. In a later paper, Schweitzer and her co-authors announced that they had found
medullary bone [source:
Schweitzer, 6/3/2005]. Medullary bone is a type of bone female birds use to store calcium for making eggshells. Birds have this bone only when producing eggs -- so the
T. rex was apparently female, pregnant and in some ways like a bird......
...
By 2008, the team was isolating amino acid sequences from the sample and comparing them to living organisms. What they found in the
T. rex bone was similar to today's chickens. The researchers, this time led by Chris L. Organ, used the same techniques on a
mastodon fossil and found it similar to today's
elephants [source:
Organ]....
Some more info to look over. Seriously tho. This flies directly in the face of what we know today. Even worse is they compared the bone was similar to today's chickens. No transitional fossils have been found between t-rex and chicken. They are now linked.
If you can't understand that I'm answering your question in a Socratic way then.... we aren't matched well enough to even be having this conversation. 
