Valley of the Dinosaurs was a Hanna Barbera produced animated series that ran for 16 installments on CBS Saturday Morning in 1974. A comic book was produced in conjunction by Charlston Comics (now defunct)
Science teacher John Butler along with his wife Kim, their two children, Katie and Greg, and their dog, Digger are on a rafting trip on the Amazon River. As they are going down the river, their boat hits a rock and capsizes. The family then gets caught in a whirlpool. When they surface upon going through an underground cavern, they find themselves in a prehistoric valley where they meet caveman Gorok, his wife Gara, their two children Lok and Tana, and their pet, a baby Stegosaurus named Glump. The two families soon become friends and Gorok and his family help the Butlers in their many attempts to find a way to return home while trying to survive in the valley.