Plot Synopsis

In this four-part series, scientist and experts explore how dinosaurs evolved from the dog-sized Eoraptor to the giant T-Rex, while relying on each other to survive until the age of dinosaurs came to a close. As part of its month-long "Dino Madness" programming initiative, Discovery Family aired the world premiere of DINOSAURS: THE UNTOLD STORY, showing two back-to-back episodes on Monday, March 16, 2015 from 8-10pm ET/PT, with one episode on each of the subsequent Mondays at 8pm through March 30.