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
Daffy Duck and the Dinosaur Daffy Duck and the Dinosaur Daffy Duck and the Dinosaur is a 1939 "Merrie Melodies" animated cartoon short supervised by Chuck Jones and produced by Leon Schlesinger Productions for Warner Bros. Pictures. The cartoon is notably the first Daffy Duck cartoon supervised by Jones. "Daffy Duck and the Dinosaur" is set in the Stone Age and features Daffy Duck, a caveman named Casper (a caricature of Jack Benny), and his pet "Apatosaurus", Fido. As usual, Mel Blanc provides the voice of Daffy here, while Casper is performed by Jack Lescoulie. This is the last cartoon with the "Vitaphone" intro, which