Test Flight
- Episode aired Dec 7, 1974
John Butler has built the valley's first glider plane, which he uses in a dogfight with a Pteranodon and to help search for Tana and Greg, who are downriver and threatened by thick fog, a Br... Read allJohn Butler has built the valley's first glider plane, which he uses in a dogfight with a Pteranodon and to help search for Tana and Greg, who are downriver and threatened by thick fog, a Brontotherium, and a sharp-tusked Mastodon.John Butler has built the valley's first glider plane, which he uses in a dogfight with a Pteranodon and to help search for Tana and Greg, who are downriver and threatened by thick fog, a Brontotherium, and a sharp-tusked Mastodon.