Anchisauria is a clade of sauropodomorph dinosaurs that lived during the Late Triassic and Early Jurassic. The name Anchisauria was first used by Galton and Upchurch in the second edition of The Dinosauria. Galton and Upchurch assigned two families of dinosaurs to the Anchisauria: the Anchisauridae and the Melanorosauridae, of which Anchisaurus and Melanorosaurus are the best-known members. The more common prosauropods Plateosaurus and Massospondylus were placed in the sister clade Plateosauria.