This clip from "Walking with Dinosaurs" depicts various dinosaurs (including the late-Triassic, plant-eating Plateosaurus which weighed about four tons). The "Age of the Dinosaurs" is imaginatively depicted in this BBC series narrated by Kenneth Branagh.
Clip from "Walking with Dinosaurs," produced by the BBC, narrated by Kenneth Branagh and originally broadcast in 1999. Online, courtesy BBCWorldwide Channel on YouTube. Copyright BBC, all rights reserved. Clip provided here as fair use for educational purposes and to acquaint new viewers with the program.