Magnon 5

Magnon 5 was a planet which was populated by a tribe of warriors who had domesticated and trained Dinosaurs. The Fourth Doctor landed on the planet to stretch his legs, but a malfunction in the TARDIS caused it to leave without him. The Doctor was hunted by the natives, who believed that he was a devil-man, but he managed to escape when the TARDIS again appeared. (PROSE: The Doctor's Journal)