Apatosaurus "Apatosaurus" may have been more solitary than other Morrison Formation dinosaurs. Fossils of the genus have only been found in the upper levels of the formation. Those of "Apatosaurus ajax" are known exclusively from the upper Brushy Basin Member, about 152–151 mya. "A.louisae" fossils are rare, known only from one site in the upper Brushy Basin Member; they date to the late Kimmeridgian stage, about 151mya. Additional "Apatosaurus" remains are known from similarly aged or slightly younger rocks, but they have not been identified as any particular species, and thus may instead belong to "Brontosaurus". The Morrison Formation records a
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,