As far as I can gather, that's not true and the soft tissue was in fact mineralized. Dinosaur "mummies" are fossils of mummies. This dinosaur 'mummy' is fair

As far as I can gather, that's not true and the soft tissue was in fact mineralized. Dinosaur "mummies" are fossils of mummies. This dinosaur 'mummy' is fairly unique insofar the soft tissue was mineralized without first being desiccated. Chemical traces of things like pigmentation can remain in fossilized soft tissue, I suppose that counts as "original material", but this thing isn't made out of meat anymore.