Dinosaurus!, released in 1960, is a science-fiction film directed by Irvin S. Yeaworth Jr. The movie's plot revolves around the discovery of a frozen dinosaur and a caveman on a Caribbean island. The fossils are brought to an American museum, but during transportation, the ship sinks, and the fossils end up back on the island.
The island is being worked on for a land reclamation project, and during the excavation, there are several underwater explosions, which end up thawing the frozen fossils. It's soon discovered that it wasn't just the dinosaur and caveman that were thawed but also a dangerous Tylosaurus and a primitive parrot.
The Tylosaurus, which is a prehistoric marine reptile, starts attacking the small fishing village on the island, tipping boats over and devouring the fishermen. The caveman, named Bronte, is revived and starts exploring the village and the island. The parrot, called Captain, is discovered to have the ability to mimic sounds and starts communicating with the humans.
As the creatures continue to cause destruction and chaos to the island, a group of survivors tries to devise a plan to stop them. They finally come up with a way to lure the Tylosaurus away from the island and use dynamite to create an underwater explosion, killing the beast. The caveman Bronte is captured and returned to the museum, but he is rescued by Captain, who steals a plane and flies him back to the island, where they both decide to stay.
Overall, Dinosaurus! is a fun, campy B-movie that is sure to provide some entertainment for fans of classic sci-fi films.