https://en.wikipedia.org/wiki/Human-dinosaur_coexistence
The notion that non-avian dinosaurs and humans actually coexisted at some time in the past or still coexist in the present is a pseudoscientific and pseudohistorical belief common among Young Earth creationists, cryptozoologists, and some other groups. This belief often contradicts the scientific understanding of the fossil record and known geological events. Supposed evidence presented for the idea that non-avian dinosaurs persisted to modern times has often been determined to have been hoaxed.[2] Some proponents have tried to identify depictions of dinosaurs among ancient artwork or descriptions of cryptids, though such identifications are often based on outdated or incorrect ideas about dinosaur biology and life appearance[3][4] and often ignores the cultural/artistic context.[2]