The Ankylosaurus and Anatosaurus species of dinosaurs existed 80 million years before the 20th century. (PROSE: The Doctor Who Dinosaur Book [+]Loading...["The Doctor Who Dinosaur Book (novel)"])
According to the First Doctor, Rhoos was located eighty million miles from its primary star. (PROSE: The Playthings of Fo [+]Loading...["The Playthings of Fo (short story)"])