Doraemon: Nobita's Dinosaur is an anime film that premiered in winter 1980, produced by Shin-Ei Animation.

About the production: the story comes from a manga, the film runs about 92 minutes and its current status is "finished".

Its main genres are adventure and comedy, with themes such as Time Manipulation, Creature Taming, Kids and Dinosaurs.

On AniList, Doraemon: Nobita's Dinosaur has an average score of 69%, a good score, and appears on 4,258 users' lists.

Nobita finds a fossilized dinosaur egg by accident, and with the help of Doraemon's tools, they hatched the egg and began raising the dinosaur. Knowing that they can't keep the dinosaur forever, Nobita was forced to send it back to prehistoric times where a group of hunters from the future threatens to endanger the dinosaurs. Determined to save the dinosaurs from the claws of the hunters, Doraemon and the gang returns to the past and sets out in a prehistoric adventure. (Source: Anime News Network)

Official synopsis from AniList.