how can we be certain that they were warm blooded and not coldblooded like modern reptiles and as such needed exposed skin to sunbathe?>muh soft tissue
since when are birds and reptiles known for storing lots of fat around? hell, how can we know that all dinosaurs had just 2 eyes instead of 8?
all in all dinosaurs ruled the world for gorillions of years and therefore some did have feathers and/or fat and some didn't which is why generalizations are retarded. but some people just can't help themselves and must do whatever it takes to feel smarter.>ughhh skin? cringe! all dinorinos had feathers!
simple as that.