It is indeed possible that some of these dating methods are not as reliable as they are argued to be. But seems to me there is only a conflict if the same samples appear to be young by tissue and old by strata, or if a young by tissue sample is so similar to an old by strata sample that it was not feasible they could be that far apart in history.
I will agree, that anomalous data should serve as a warning not to get too cocky when making nice neat little models about what happened in the past. But I am just saying there is no reason to expand such evidence to the nature of the universe all in a rush.
“Was this particular horn found in in a layer that geological dating determined to be ancient?”
Yes, it was excavated from the Hell Creek Formation in Montana, which is dated to Upper Cretatceous/Lower Pleistocene era by standard geological dating, and which has produced a wealth of other fossils.
“It is indeed possible that some of these dating methods are not as reliable as they are argued to be. But seems to me there is only a conflict if the same samples appear to be young by tissue and old by strata, or if a young by tissue sample is so similar to an old by strata sample that it was not feasible they could be that far apart in history.”
The problem is going to be second one you listed. There are thousands of similar dinosaur fossils pulled from the same formation, that scientists date to be tens of millions of years old. If this fossil is only thousands of years old, then they all must be only thousands of years old. That includes ankylosaurs, raptors, tyrannosaurs, etc. It’s one of the most prolific fossil beds for that geological era. They would all have to be running around a few thousands years ago if the formation dates from that period.
“But I am just saying there is no reason to expand such evidence to the nature of the universe all in a rush.”
Well, it’s not as if this is the first soft tissue sample found that challenges the idea that these kinds of fossils are millions of years old. It’s probably the best sample yet, but it’s far from the only one.