Hello there new user! My name is Ankysareawesome, but you can call me Anky or Rexy. I’m the resident speculative evolution nerd. Make sure to read the guidelines! Also,

But to answer your question, we have birds, which are avian dinosaurs.

If you want non avian dinosaurs, I’d say that most creatures that are 4 tonnes or higher would probably die from over hunting by humans.

If we took humans out of the occasion, I’d say that they’d be fine, though lack of food and a colder world could be a bit bad for them

Then nothing would change, because Dinosaurs ARE still alive, ever heard of Birds?

Welcome to the wiki,i'm EpicThoradolosaur but you can call me Epic/Thordor and i'm that one JWA expert in Dinopedia

Also for your questions

Birds are dinosaurs

Humans would hunt them to extinction

They are

They are