Soft tissue found in T-Rex fossil

That is totally amazing.

pdog-birdbones have a certain hollowness and extensive vascular structure on the inside walls of the long bones.

agreed, but,the formation of a leathery "soap"from fatty deposits has been found from fossils from 20000 years ago.Im not at all acquainted with a adiposere deposit older than that

Im at a loss to get my mind around this too. Im sure it will < if true, lead to some new work on preservation chemistry. If its the result of anoxic conditions like some of the other preserved protein and chitin specimens, then we will have to start smacking bones open like clam shells to look inside

I see that gunga is off already jumping to unfounded conclusions without any sense of where this stuff even takes us. By his comments, we can see how his mind works. Inside his head There is no room for any objective science , only dogma.
I hope they tear this stuff apart and subject it to testing at all levels. Its amazing, probably among the most important fossil finds ever.

Here is an opportunity for young-earth creationists to make a strong case. It's easier to prove an upper limit than a lower limit: e.g., that under the best of conditions, cells or blood vessels could not be older than a lower limit based on lab observations, rather than to claim they could last millions of years, because no observer could keep records on such time scales. Someone should also apply carbon dating to the tissues and see if any C-14 is present. It would be below the detection threshhold if the bone is as old as claimed. Watch the efforts to find out if DNA is still present, which "cannot survive that long" according to Derek Briggs in the News@Nature article. There's a prediction that can be tested.

I hope they tear this stuff apart and subject it to testing at all levels. Its amazing, probably among the most important fossil finds ever.

How interesting. I wonder, could these blood structures offer evidence towards T.Rex being warm-blooded or not?

One comment I've seen:

Quote:

Here is an opportunity for young-earth creationists to make a strong case. It's easier to prove an upper limit than a lower limit: e.g., that under the best of conditions, cells or blood vessels could not be older than a lower limit based on lab observations, rather than to claim they could last millions of years, because no observer could keep records on such time scales. Someone should also apply carbon dating to the tissues and see if any C-14 is present. It would be below the detection threshhold if the bone is as old as claimed. Watch the efforts to find out if DNA is still present, which "cannot survive that long" according to Derek Briggs in the News@Nature article. There's a prediction that can be tested.

Uhhh. Carbon-14? That is only good for dating up to a certain age... less than 100,000 years. You need another isotope with a longer half-life.

Carbon dating is good for about 40,000 - 50,000 years. My own guess is that the trex tissue would carbon date somewhere around 10k - 30k.

Carbon dating is good for about 40,000 - 50,000 years. My own guess is that the trex tissue would carbon date somewhere around 10k - 30k.

Piffka wrote:

How interesting. I wonder, could these blood structures offer evidence towards T.Rex being warm-blooded or not?

I was wondering this myself. And I think there's a good chance that they will tell us exactly that, and more.

Warm bloodedness is already indicated in fossils which show the bone density and cell structure, and I've been convinced for years that some (if not all) dinosaurs were warm blooded. The more we learn about their behavior and the more we learn about their relationship to birds, the more hot blooded dinosaurs (theropod dinosaurs) appear to be.