People don't think dinosaurs are extinct. People know they are.
At least the ones you are referring to.
Perhaps you would like to be more specific.
Birds could be an evolution of a dinosaur as i think though.
I think they became extinct at the end of the Mesozoic era
No. Dinosaurs were extinct by the time humans evolved.
They are not - mammoths were dinosaurs and are extinct
People believe that it is a plesiosaur (not right spelling) from the age of the dinosaurs which hasn't become extinct
I think .... This nation extinct with the dinosaurs.
Dinosaurs are now extinct. There are many species of birds that are extinct.
Extinct. Yes, ALL dinosaurs are extinct.
One reason is that there were a lot of fossils in many layers of rock and then suddenly, there are a lot fewer. Also, there don't appear to be many dinosaurs alive today. So, they went extinct. Do you really mean "how" did the dinosaurs go extinct?
Nobody has dinosaurs; they're extinct.
Umm sorry to break the news to you but dinosaurs went extinct along time ago
because have you seen any dinosaurs around? and go dig everywhere you will eventuly find dinosaur bones.
No, the dinosaurs are now all extinct, though some people believe that birds are evolved from dinosaurs and are their direct descendants.