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
The Good Dinosaur The Good Dinosaur The Good Dinosaur is a 2015 American 3D computer-animated adventure film produced by Pixar Animation Studios and released by Walt Disney Pictures. The film is directed by Peter Sohn in his directorial debut from a screenplay by Meg LeFauve from an original idea by Bob Peterson. Set on a fictional Earth in which dinosaurs never became extinct, the film follows a young "Apatosaurus" named Arlo, who meets an unlikely human friend while traveling through a harsh and mysterious landscape. The film features the voices of Raymond Ochoa, Jack Bright, Sam Elliott, Anna Paquin, A.J. Buckley, Steve Zahn,