Rick Marshall and his children Will and Holly are on a weekend expedition rafting down a river when an enormous earthquake diverts them to an eclectic alien world inhabited by dinosaurs, chimpanzee-like cavemen called Pakuni, and aggressive, humanoid lizard creatures called Sleestak.
No of Seasons: 3Total episodes: 43First Air Date: 1974-09-07Last Air Date: 1976-12-04
