How well I remember this film Dinosaurus from seeing it in the theaters way back when I was 13 years old. I liked the special effects in creating the two dinosaurs and the climax is a very exciting one still. Of course now I can spot some of the ludicrousness of the story.
The location is a small Caribbean Island where a group of construction workers are dredging a harbor to make it a deep water port. Their dynamiting has unleashed a cold underground river and two dinosaurs, a tyrannosaurus and a brontosaurus are released from being cryogenically frozen for a million years or so. As is true in a flock of other science fiction films they thaw out and lightning strikes them and they come alive like Frankenstein's monster.
Of course they're kind of hungry and the brontosaurus has a nice tropical rain forest to feast on. But T-Rex is a flesh eater and there's lots of people flesh around as well.
Unknown to everyone else a caveman also was washed ashore and he thawed out as well. He was found by Fred Engelberg who has to be one of the stupidest villains ever on record. In the absence of the governor he's in charge. I'm assuming the island is an American possession, the rest of the natives have Spanish accents both white and black, but Engelberg for reasons I can't figure out has a French accent. He wants his caveman to make a profit off of and even with a raging T-Rex around he's going to capture that caveman. As the natives of the island would say, Que Pendejo.
The climax involves the lead actor and construction boss Ward Ramsey dueling with Tyrannosaurus using a steam shovel as a weapon. That has stuck with me since childhood and it's very excitingly staged.
Dinosaurus is still a suspenseful and exciting science fiction film to watch with its no name cast and nice special effects for their time.