Dinosaurs, did they exist? Once again science is divided on the matter, some scientist think they did while others think they did not.

Many creation scientists think that the dinosaur bones were planted by NASA in 1657 to fool people into thinking that the World was older than 6023 years and this argument has some substance. Why? Well all the dinosaur bones that have been found have been made of stone...statues perhaps? Well, the only other animal that has stone bones is a horse and if they break a leg it is very hard to heal so this would make life very hard for the dinosaurs as there were no vet's 4000 years ago. Thoughts?