I was just wondering, do we really know what dinosaurs looked like? Say spinosaurus for example, do we really know if that wasn't just a big crocodile? Also, do we know theropods were actually bipedal, or could they have stood on four legs?
Also, do we know they really looked like reptiles? If they were the ancestors of birds, wouldn't they look more like birds. Could all dinosaurs have had feathers?
So, when you watch a dinosaur on a tv programme, is that actually what they looked like, or did they probably look completely different?
I would appriciate any answers on this one as I have always wondered if they did look like what people say they do.