Valley of the Dinosaurs is an American animated television series produced by the Australian studios of Hanna-Barbera Productions and broadcast on CBS from September 7 to December 21, 1974, and in syndication from 1977 to 1983. The series, about a contemporary family sucked by a vortex back to the Stone Age was intended to be educational as well as entertaining, demonstrating the early human uses of fire, clothing, weapons and cooking. It debuted on the same day as Land of the Lost.