We're Back! A Dinosaur's Story is a 1993 American animated film based on the 1987 Hudson Talbott children's book of the same name and released to theaters on November 24, 1993. It depicts four intelligent anthropomorphized dinosaurs, Tyrannosaurus Rex, Triceratops Woog, Pteranodon Elsa, and Parasaurolophus Dweeb, in their journey to the Museum of Natural History. The prehistoric beings have travelled to the present day and become intelligent by eating a "Brain Grain" cereal invented by scientist Captain Neweyes, who wants dinosaurs to be personally seen by children. They face two major conflicts: an attempt not to be noticed by the public, and to not be exploited by Neweyes' evil twin brother Professor Screweyes, who wants to use the dinosaurs for his circus business. The dinosaurs are helped along by two runaway children, Louie and Cecilia.

We're Back! A Dinosaur's Story was produced by Steven Spielberg's Amblimation animation studio and distributed by Universal Pictures.

https://en.wikipedia.org/wiki/We%27re_Back!_A_Dinosaur%27s_Story_(film)