Primeval World

Primeval World is a short attraction on the Disneyland Railroad at Disneyland in Anaheim, California and on the Western River Railroad at Tokyo Disneyland in Japan. It is based on the Rite of Spring segment of the 1940 Disney film Fantasia. In Disneyland, it comes immediately after the Grand Canyon between Tomorrowland Station and Main Street Station. In Tokyo Disneyland, it comes just before you arrive back at the Adventureland Station. At the Primeval World, you see a number of dinosaurs in a supposed natural habitat after travelling back in time.

Dinosaurs and other Prehistoric Animals
The Primeval World diroma was originally constructed by Disney for the 1964 New York World's Fair and was viewed from inside a Ford Mustang Convertible rather than a train. The attractions It's a Small World, Great Moments with Mr. Lincoln, and the Carousel of Progress were also constructed for the same Fair and transferred to the park after the closing of the Fair in 1965.
 * Edaphosaurus - Actually a reptile that died out before the dinosaurs existed, though this is a common mistake. They are among the first creatures shown, and have characteristic glowing red eyes.
 * Giant Snails
 * Giant Scorpion
 * Giant Dragonfly
 * Brontosaurus - A large, long-necked plant eater seen in the water. Both adult and young are present.
 * Pterodactyl - Though it is a flying reptile, they aren't seen flying and are instead perched on cliffs.
 * Triceratops - A parenting couple of these three-horned dinosaurs are seen watching over their hatchlings.
 * Struthiomimus - A small herd of these ornithomimids are seen at a watering hole in a desert. They may not actually be Struthiomimus, as names are not mentioned on the ride.
 * Tyrannosaurus Rex - One of the last dinosaurs to be seen, it can be seen fighting a Stegosaurus around a lava pit.
 * Stegosaurus - One of the last dinosaurs to be seen, it can be seen fighting a Tyrannosaurus Rex around a lava pit.

Mistakes

 * As with many of the dinosaur-based items in the world, it depicts dinosaurs from all different time periods and places in the same habitat. This is also seen in the film The Land Before Time, and Dink, The Little Dinosaur which is non-Disney.
 * Many of the dinosaurs are out of proportion to their actual size.
 * The Tyrannosaurus Rex near the end has a number of faults:
 * The head is wrong shape.
 * There are three claws on the hand (three fingers like an Allosaurus or Gigantosaurus); Tyrannosaurus had two.
 * It is standing upright, which has been determined wrong.
 * Its tail is dragging on the ground.
 * The Brontosaurus are seen chewing plants like cows. This is known to be incorrect, as they swallowed their food whole and it was broken down by gizzard stones (gastroliths)
 * Dimetrodons went extinct before the dinosaurs existed.