The film's estimation is off by a couple million years both in its extinction date and its oldest
dinosaur fossil date.
Dinosaurs, the Terrible Lizards says that the oldest dinosaur fossils are about 225 million years old when, as of 2024, a 233 million-year-old dinosaur fossil was found in Brazil. The film says that dinosaurs went extinct 70 million years ago but there have been fossils found from 65 million years ago. The most glaring inaccuracy is the dinosaurs' lack of
feathers. While it is true that dinosaurs may have depended on their surroundings to maintain a constant homeostasis, this is not thought to be true of all dinosaurs as the film suggests. The maximum length of a
Tyrannosaurus fossil found indicates that they could grow up to 40 feet and 20 feet tall, not as the film states (50 feet long and 18 feet tall). The film states three possible dinosaur extinction events where the dinosaurs either went extinct due to climate change, that their food sources became inadequate, or the possibility of
mammals eating the dinosaurs’
eggs. While those options may be true in part for some species of dinosaur, the present theory of the dinosaurs’ extinction event is that
an asteroid impact with Earth provided a much more abrupt departure. ==See also==