Paleontologists in 2005 hailed research that apparently showed that soft, pliable tissues had been recovered from dissolved dinosaur bones, a major finding that would substantially widen the known range of preserved biomolecules. The finding would also help astrobiologists understand the types of biosignatures that could be used to search for signs of past life on other planets.But new research challenges that finding and suggests that the supposed recovered dinosaur tissue is in reality biofilm – or slime.
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