The scientists also dissolved bone in acid, as had been done previously, and found the same soft tissue structures.
They conducted a comparison using infrared mass spectroscopy and determined the structures were more closely related to modern biofilm than modern collagen, extracellular proteins associated with bone. Using an electron microscope, the researchers saw coatings on the vascular canal walls that contained gas bubbles, which they associated with the presence of methane-producing bacteria.
Michael Snyder The Truth March 7, 2014 A fossil bed in China that is being called “Jurassic Park” has yielded perhaps the greatest dinosaur soft tissue discovery of all time.
According to media reports, “nearly-complete skeletons” have been discovered that even include skin and feathers.
"You have to go where the science leads, and the science leads me to believe that this is bacterial biofilm." The original research, published in Science magazine, claimed the discovery of blood vessels and what appeared to be entire cells inside fossil bone of a Tyrannosaurus rex.
The scientists had dissolved the bone in acid, leaving behind the blood vessel- and cell-like structures.
Paleontologists in 2005 hailed research apparently showing that soft tissues had been recovered from dissolved dinosaur bones, but new research suggests the supposed recovered tissue is really just biofilm -- or slime.
And if those dinosaurs really were millions of years old, those scientists would have been 100% correct.
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"We determined that these structures were too common to be exceptionally preserved tissue.
We realized it couldn't be a one-time exceptional preservation," Kaye said.