giant high pitched screeching flying dinosaurs that come from deep inside the earth

After a spaceship crashes on Earth, a giant egg rolls from the wreckage. The egg quickly hatches to reveal an alien dinosaur. Due to the Earth's atmosphere, the newly hatched alien dinosaur rapidly increases in size. The dinosaur turns its attention towards a railway township, which it attacks, causing great destruction. The alien dinosaur sees a water tower, which it commences to climb. The continued affect of Earth's atmosphere on the alien dinosaur makes the creature burn, destroying it.

A huge mysterious comet is on a collision course with earth. A crash is averted, but the near miss causes tidal waves, exploding mountains and huge earthquakes. The earth cracks apart and up from the depths come creatures from the past. Huge dinosaurs begin to roam the planet, a planet now covered with swamps and jungles. Then, as suddenly as they came to life, the dinosaurs begin to die. Only the DINOSAUR PATROL can restore order on earth. Or can they?

In the near future it's discovered that the dinosaurs did not die off, but instead live on near the center of the Earth. The evil lord Tyrannus uses the mutated dinosaurs descendents to attack Earth in his effort to rule the world. Can Gemini Force, a group of four superpowered teens who've pledged to protect the Earth, stop his plans? Written by Mike Konczewski 70 millions years ago, the creatures known as dinosaurs mysteriously disappeared from planet Earth. Until now, it was assumed they were extinct. In reality, they had burrowed deep into the Earth and evolved into supermonsters. In the year 2000, the people from planet Earth were amazed and terrified by the greatest catastrophe ever known to mankind: the re-appearance of the dinosaurs. Under the direction of their emperor, Tyrannus, the creatures now seek to destroy mankind.

In the present a team of four anthropomorphic dinosaurs, created by aliens, must stop three anthropomorphic velociraptors who want to cause a cataclysm that would speed up global warming and make Earth's climate pleasant for dinosaurs again.

When a group of isolated people in the Greek mountains set off a cave explosion, they are menaced by an invisible shrieking dinosaur that had been buried for eons

After undersea explosions near a Caribbean island, prehistoric creatures are unleashed on the unsuspecting population.