1. Do you have links showing “distinct dinosaur depictions by their fellow human ancestors”?
2. Who claims to have found (presumably dinosaur) soft tissue and collagen?
Are you thinking of the popular misrepresentations of Dr. Schweitzer’s work? If so, note that “Dr. Schweitzer is not making any grand claims that these soft traces are the degraded remnants of the original material - only that they give that appearance.”
And Prof. Matthew Collins, an expert in molecular paleontology said, “This may not be fossilisation as we know it, of large macrostructures, but fossilisation at a molecular level. My suspicion is this process has led to the reaction of more resistant molecules with the normal proteins and carbohydrates which make up these cellular structures, and replaced them, so that we have a very tough, resistant, very lipid-rich material - a polymer that would be very difficult to break down and characterise, but which has preserved the structure.”
And, there is much more to say about all of this…