The general consensus among scientists is that no dinosaur species survived the mass extinction at the end of the Cretaceous period. There are a few paleontologists who don’t believe that the dinosaurs died off at the end of the Cretaceous period, but actually lived on, dying out gradually into the Cenozoic era. This theory will continue to be highly debated until dinosaur fossils are proven to exist past the Cretaceous period in rocks. Some scientists claim they have found such evidence, but their findings are still controversial.

In addition, if the definition of dinosaurs includes the birds, then, yes, this family of dinosaurs did survive the extinction. After the Cretaceous period, birds greatly diversified into numerous species, and as we well know, these are species are living everywhere on the planet today.