>>9610317>I haven't gone down the feathered dinosaur rabbit hole personally (outside of learning about the imprints), so I don't know where all the fossils were found or other specific details, but it could very well be that only feathered dinosaurs (raptors) lived in the East (outside of ones like Archaeopteryx, well even Germany is quite far East).We know that both Deinonychus, an American-only raptor, and Velociraptor, a Mongolian breed, had feathers too, though. While the actual imprints haven't survived, closer examination of the forearm, tail, and spine bones all show that they have quill nobs that correspond to where modern birds have their large pinions anchored, suggesting the larger feathers were rooted in those points. So even if the feather imprints themselves haven't survived on all specimens globally, the actual bones do indeed suggest the feather theory is correct - though only on dromaesaurs. There are no known herbivores that had feathers of any kind, and we have skin impressions from Tyrannosaurus that shows it likely didn't have any.
