If you could bring back one dinosaur, which one would it be?

I would have answered the Pteranodon, a flying one with huge wingspan I dreamt long about as alternative to The Hobbit dragons.
Just to discover it is not a true dinosaur.
“While not dinosaurs, pterosaurs such as Pteranodon form a clade closely related to dinosaurs as both fall within the clade Avemetatarsalia.” Wikipedia
So, sorry -not sorry- no dinosaurs back this time!