depends on your religion, eg the bible says the earth is only 6000 years old, and no actual proof of dinosaurs yet, yes they were real bones but not from dinosaurs, they were a bunch of other other creature bones combined, another eg: pls note I have no proof but there is a CHANCE that a maybe a loaf skull was a leopard seal skull, around the same size and VERY if not EXACT similar shape.

also one time my mum's uncle got a crocodile tooth and said he thought he found a dinosaur tooth and two paleontologists said it was a recently discovered dinosaur tooth, note this was in 2006 so it's not recent anymore. Please excuse my grammar.