Still more questions to be answered, and it wouldn’t matter how well it is protected, doesn’t soft tissue degrade rather easily unless artificially (man-made) preserved in a lab?
Though I will look into englobement further, the processes involved. (Not tonight, tomorrow sometime.).
“They may claim 68 million years, but where (How) did they date them..by stratification..?”
Probably.
“Still more questions to be answered, and it wouldn’t matter how well it is protected, doesn’t soft tissue degrade rather easily unless artificially (man-made) preserved in a lab?”
I don’t know. If something is free from oxidation or radiation(sunlight), chemically it can remain the same almost indefinitely(relatively speaking). Something that is englobed still has its own oxygen, and hydrogen(acids) to degrade it. Hense my “very bad tasting steak” comment.
The K-T boundary is distinct in the Hell Creek Formation and has been dated reliably wherever discovered to 65 million years. Older strata in the Hell Creek Formation are chiefly dated by paleomagnetism, supported by biostratigraphy.