Scrooge buys one of Glomgold's islands, wherein houses a diamond mine. Upon finding out, Glomgold has the diamond mine blown away from the island. Scrooge, Launchpad, and the nephews then go back in time to try to prevent the explosion, but end up going 1 million years back, where they meet Bubba the Caveduck and his pet Triceratops, Tootsie.
Elenco: Alan Young , Terence McGovern , Chuck McCann , Russi Taylor , Frank Welker , Hal Smith , Joan Gerber , Brian Cummings , Hamilton Camp , June Foray , Kathleen Freeman , Tony Anselmo , Philippe Dumat .