I swear these paleontologists were the kids who never finished jigsaw puzzles or, would finish the outline, a couple small patches inside of a 1,000-piece puzzle and call it quits.
Are they SURE of the rest of the dinosaur based upon a half dozen bone fragments?
Comparative anatomy was pioneered by Cuvier, who was a Young Earth Creationist of a few hundred years ago, but he did a nice job anyway.