Apatosaurus considered a junior synonym of "Apatosaurus"; its only species was reclassified as "A.excelsus" in 1903. A 2015 study concluded that "Brontosaurus" is a valid genus of sauropod distinct from "Apatosaurus", but not all paleontologists agree with this division. As it existed in North America during the late Jurassic, "Apatosaurus" would have lived alongside dinosaurs such as "Allosaurus", "Camarasaurus", "Diplodocus", and "Stegosaurus". "Apatosaurus" was a large, long-necked, quadrupedal animal with a long, whip-like tail. Its forelimbs were slightly shorter than its hindlimbs. Most size estimates are based on specimen CM3018, the type specimen of "A.louisae". In 1936 this was measured to
Dinosaur (Disney's Animal Kingdom) Dinosaur (Disney's Animal Kingdom) Dinosaur, formerly known as Countdown to Extinction is a dark ride EMV attraction at Disney's Animal Kingdom in Walt Disney World, Lake Buena Vista, Florida. The ride features a turbulent journey through the late Cretaceous period, featuring prehistoric scenes populated with dinosaur audio-animatronics. Originally named "Countdown to Extinction" when the park opened in 1998, the ride's name was later changed to "Dinosaur" to promote the Disney animated film of the same name. However, the two dinosaurs most prominently featured in the ride have always been an "Iguanodon" and "Carnotaurus", which were both featured prominently in the