Dinosaurs first appearance in the history, their lives, and extinction event introduce scientific evidences against evolution rather than being reminiscent of it. Why did they become extinct from the scene of the history? Trying to find evidences for evolution theory from the answers to the question do not carry much conviction, because what is tried to be answered with the theory of evolution is not how species came up but how they extinct. It is quite interesting not to find any convincing evidence about the origins of the dinosaurs in the books related.
It should be also kept in mind that catastrophic extinction event of the dinosaurs rules out the possibility of gradual Darwinist evolution. If it was evidenced that dinosaurs evolved and turned into another species and extinct gradually, then it would have been considered good material for the evolutionist.

Would never like to comment on something about which we have no knowldge at all if these highly educated persons are writing like this i am sure they have enough proof to say what they have said

I dont like to answer your question because you always award BA to a particular person of your religion.

They have evidence for this