Name: We're Back!: A Dinosaur's Tale
Platform: Sega Genesis / Mega Drive
Region: USA
Media: Cartridge
Controller: Gamepad
Genre: Action, Adventure
Gametype: Licensed
Release Year: 1993
Developer: Funcom
Publisher: Hi Tech Expressions
Players: 1
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Captain New Eyes travels back in time and feeds dinosaurs his Brain Grain cereal, which makes them intelligent and non-violent. They agree to go to the Middle Future (our era) in order to grant the wishes of children in New York city. They are to meet Dr. Bleeb of the Museum of Natural History, but get sidetracked with their new children friends and run into the Captain's evil brother, Professor Screw Eyes, who has other plans for the dinosaurs.

http://www.imdb.com/title/tt0108526/plotsummary
http://www.gamefaqs.com/console/genesis/home/586595.html