Planet of Dinosaurs is a 1977 science fiction film. Set in an unspecified future, the film follows the journey of Captain Lee and his crew after they crash land on a planet with similar life conditions as Earth, but millions of years behind in time. Encountering a wide variety of dangerous dinosaurs, the crew decides that its best chance for survival lies on finding higher ground and setting up a defensive perimeter on a higher plateau for refuge to wait for when (or if) their rescuers arrive. They soon encounter a deadly Tyrannosaurus and must figure out a way to defeat the creature and survive on the planet.
https://en.wikipedia.org/wiki/Planet_of_Dinosaurs
I can not help but notice the ladies never put on leather bikinis, yet one of guys immediately goes shirtless.
Jokes on you, 70's, that still works.
And it probably worked just as well in the 70s...