Valley Of The Dinosaurs is a Hanna - Barbera cartoon.
The Butler Family encounter a vortex that takes them to an unknown place populated with dinosaurs. The Gorok Family assists The Butler Family to search for a new portal to get home.
This series was made by Hanna - Barbera in the middle of The Flintstones Craze. Land Of The Lost was made around the same time as well. Music is by Hoyt S. Curtin. It ran for 16 episodes.