The Ankylosaurus ( Ankylosaurus magniventris ) was a type of armored dinosaur . Since its description in 1908 , Ankylosaurus has been publicized as the archetypal armored dinosaur , and due to its easily recognizable appearance and the intense public interest in dinosaurs , Ankylosaurus has been a feature of worldwide popular culture for many years . A life-sized reconstruction of Ankylosaurus featured at the 1964 World 's Fair in New York City greatly contributed to its popularity .