Oh for sure, without a doubt. Hell it took forever for people to figure out feathers.
Then again, on rare occasion we do get some cool skin/soft tissue evidence like that Nodosaurus in Canada. Sometimes they're strikingly similar to what we thought (or not?). I am not a paleontologist and I am speaking out of my ass.
That Nodosaurus is super cool though, y'all should see it.
In October, he was one of nine senators to vote against legislation intended to outlaw flag burning and other forms of flag defacement and joined Bob Dole and Orrin Hatch, the other two Republicans to vote against the bill,
That's awesome. At least he stood for free speech..
in voicing a preference for a constitutional amendment.
This is still not something we can answer with certainty. For a couple of years there, paleontology thought that psittacosaurus had feathers on its tail - and as a ceratopsian, on the complete other side of the dinosaur 'tree', that would suggest the base form for dinosaurs must have feathers and any that didn't have them lost them at some point in their lineage (and thus could potentially regain them if the DNA was deactivated rather than lost). Now the feathers are disputed again, as "something else" - spines of some sort unrelated to feathers.
No doubt lots of dinosaurs were scaly, but I don't think anyone would say with certainty that feathers were limited to late theropods.
Mammals only got yeeted to their own evolutionary tree branch 40 million years prior to those that would be considered reptilian (sorta dinos too) which was somewhere in the realm of 250 million years ago.
Meaninng the reptiles of today are ~5x further apart in time from dinosaurs, than dinosaurs are from their common ancestors to mammals.
I think we really should just not bother thinking in terms of current speciation concepts. They could have had jellyfish like tentacles dangling allover their skin and we'd never know.