Marshall, Will and Holly, on a routine expedition, met the greatest earthquake ever known. They landed in the TV show "Land of the Lost," featuring Grumpy (a T. rex), Torchy (a Dimetrodon), Sleestak (bipedal lizards) and Chaka. Produced by Sid and Marty Kroft, the series was also largely created (and some episodes written) by David Gerrold, who wrote what episode of the original "Star Trek" series?
The Trouble with Tribbles