Robert T. Bakker — American Scientist born on March 24, 1945,

Robert Thomas Bakker is an American paleontologist who helped reshape modern theories about dinosaurs, particularly by adding support to the theory that some dinosaurs were endothermic. Along with his mentor John Ostrom, Bakker was responsible for initiating the ongoing "dinosaur renaissance" in paleontological studies, beginning with Bakker's article "Dinosaur Renaissance" in the April 1975 issue of Scientific American. His special field is the ecological context and behavior of dinosaurs... (wikipedia)

Fossils have richer stories to tell - about the lub-dub of dinosaur life - than we have been willing to listen to.
Feathers predate birds.
Birds evolved from a small raptor like theropod.
It was not an asteroid or comet, because it would have killed everything.
Stegosaurus was common only on well drained, dry soil.