Halfcentaur
Philosopher
- Joined
- Jun 10, 2010
- Messages
- 6,620
I think you misunderstand the implications (please correct me if I misunderstand you).
You are referring to the density and distribution of blood vessels in the bones of non-avian dinosaurs, correct? The big deal there is that it implies high metabolic rate, which throws out the old "cold, dumb, slow" image of dinosaurs.
This has zero to do with when they lived, but has plenty (very interestingly indeed) to do with how they lived. It also speaks to the fact that homeothermy/bradycardia/endothermy has either evolved (in terms of a major radiation) twice, or it evolved before mammals diverged from the ancestral branch.
Edit, wrong link.
http://www.smithsonianmag.com/science-nature/dinosaur.html
He feels the rate of decomposition would never produce such a finding barring a time period of around ten thousand years give or take at most for these trace elements of what might be red blood cells to be identifiable.
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