The character known as Dinosaur Mom appears in the anime film Kaiketsu Zorori Mamoru ze! Kyōryū no Tamago. She is a dinosaur mother who resides on Ototo Island, a legendary island where dinosaurs live. She is an established friend of the main character Zorori and his companions Ishishi and Noshishi.

Her role in the story begins when she sends a letter to Zorori, informing him that she has laid eggs and inviting him to come and see them before they hatch. When Zorori and his friends arrive on the island, she gives them a warm welcome. That night, however, a powerful typhoon strikes the island, and her important eggs are swept away into the sea. This event drives the main plot, as Zorori promises to retrieve the eggs and return them safely to her.

No information is available regarding her specific dinosaur species, her personality traits, her deeper motivations beyond protecting her offspring, her relationships with other characters aside from her friendship with Zorori, any character development she undergoes, or any notable abilities she may possess.