Set in the American Southwest, Doc (Raphael Sbarge) is an alcoholic security watchman protecting digging equipment from environmental activists, though he befriends one of them named Thrush (Jennifer Runyon). Meanwhile, Dr. Jane Tiptree (Diane Ladd) of the Eunice Corporation is breeding a strain of extra large and fertile chickens by splicing their DNA with that of crocodiles, iguanas, albatrosses, vultures, pelicans, turkeys and ostriches. Unknown to the Corporation's sponsors however, Tiptree is impregnating several of the chickens with dinosaur DNA. One of her resulting creatures, a Deinonychus, escapes and kills the activists, as well as other civilians. Doc investigates and discovers that Tiptree is also creating a virus which causes women to fatally conceive baby dinosaurs, in order to wipe out humanity and thus allow Carnosaurs and Raptors to reclaim the Earth as their own. Tiptree dies giving birth to a baby raptor. After narrowly escaping a Tyrannosaurus and the lab, Doc takes Thrush to a house to recover and injects a serum to cure her. Doc battles the Tyrannosaurus with a skidsteer (an action that was repeated in the fourth sequel) before impaling it. The government infiltrates the community in order to "sterilize" the situation by shooting all the civilians, infected or not. Thrush dies from the virus, meaning that the serum did not work. Doc is shot and killed by government soldiers, who then burn his and Thrush's bodies.
At the Yucca Mountain nuclear waste repository, repair crews are puzzled to find power cables ripped out from the ceiling. Meanwhile, a young hacker boy named Jesse is caught trying to steal dynamite. His uncle bails him out, and a workman teaches him how to operate a forklift, which contains a remote control to open the door to a deep elevator shaft. That night, an animal appears at the repository's mess hall and kills everyone but Jesse.
In the opening sequence, an army convoy is attacked by terrorists who soon discover they have stolen a truck of living frozen biological material instead of uranium. Once at a dockside warehouse, two frozen Velociraptors and a huge T-Rex escape and kill many of the terrorists before the police arrive, who expect to find drug smugglers. After finding the sole survivor, the police are killed inside the warehouse by the Velociraptors. An anti-terrorist special force led by Colonel Rance Higgins is called in by General Mercer where they find pieces of bodies and a refrigeration truck rather than uranium. They maneuver through warehouse boxes until two get slashed to death. The survivors learn from Dr. Hodges that these are the last three "carnosaurs" in existence: two male Velociraptors and one female T-Rex (the same dinosaurs in the convoy) left from the genetic reconstructions of the previous Carnosaur installments. It is made clear that the dinosaurs need to be caught alive, relating to the potential for curing major diseases. A massive meat shipment resides at the dock, so the three soldiers hunt in that area, meeting up with a unit of Marines who have come as backup. Soldier Polchek is given drugs to shoot into the carnosaurs as the group set up a lure and net trap with meat. One of the Velociraptors attacks and almost succeeds in dragging off Polchek, but is shot down. They soon take the raptor back to the base for further examination.
Dr. Abner Perry, a British Victorian period scientist (Cushing), and his US financier David Innes (McClure) make a test run of their Iron Mole drilling machine in a Welsh mountain, but end up in a strange underground labyrinth ruled by a species of giant telepathic flying reptiles, the Mahars, and full of prehistoric monsters and cavemen. They are captured by the Mahars, who keep primitive humans as their slaves through mind control. David falls for the beautiful slave girl Princess Dia (Munro) but when she is chosen as a sacrificial victim in the Mahar city, David and Perry must rally the surviving human slaves to rebel and not only save her but also win their freedom.
Set in the stone age, King Low-Brow rules the land and a harem of wives. When Charlie arrives in this land (where every man has one thousand wives), he falls in love with the King's favorite wife. When the King falls over a cliff, he is presumed dead and Charlie crowns himself King. The King, however, is not dead and comes back and bashes Charlie over the head with a rock. It turns out it was a dream and a police man bashed Charlie over the head with his club because he was sleeping in the park.
Durant la Préhistoire, quand les dinosaures et les mammouths parcouraient encore la terre, un homme des cavernes courageux, Doug, et son meilleur ami Hognob (Crochon en français) s’unissent pour sauver leur tribu d’un puissant ennemi.
Dennis and his friends find a dinosaur bone in his backyard, dubbed by him as the "Dennissaurus". The discovery makes life miserable for everyone, as scientists, reporters, and amusement park operators overrun the neighborhood.
80 million years ago, during the Cretaceous period, a young Tarbosaurus named Speckles, for his unique birthmark, lives and hunts with his older juvenile brother and sisters and his mother. Speckles is left alone when a rogue, scarfaced Tyrannosaurus named One-Eye causes a stampede to kill Speckles' family in order to usurp their territory.
Ernie Fitzpatrick is a daredevil kid who lives in Terra Dino with his best friend Max Santiago and his trouble-making sister Julia, who likes to bust him. Ernie and Julia live with their mother Sue, who has been chosen as the mother of the year, but she is overprotective of them and often makes them leave notes. Ernie is told to go to the store after school to keep an eye on it, but he disobeys orders and goes with Max to the Terra Dino Museum to sneak into a forbidden part of the area still under construction to see the bones of the ferocious Sarcosuchus. But Julia enters as well and uses a quarter from Ernie to set off the alarm. Julia is able to escape but Ernie and Max get caught by the guards, and Sue grounds Ernie for three weeks. When Ernie finds out Julia did it, he gets sick and tired of how he never gets his own way, but he decides to get his revenge by sneaking out again, but Julia discovers this and follows.
A North African dinosaur, related to the crocodile, is found which could grow up to fifty feet long. Dr. Campbell (Bruce Weitz) uses its DNA to create two hybrids of it with a modern-day crocodile at Paula Kennedy's Genetic Research Co. (Gereco) lab. One creature kills Dr. Campbell's assistant and the other creature before escaping. This information is kept from Sheriff Harper (Napier) by Kennedy, stating the dead creature killed Campbell's assistant. His daughter, county dog catcher Diane Harper, helps her ex welding artist, Tom Banning, and his 12-year-old brother Michael (Jake Thomas) find their three legged dog, Lucky, who was lost a few days earlier.
A modern day Texas community is overrun by vicious prehistoric velociraptors and a group of people try to survive the raptor onslaught at a cattle ranch.
In 2004, not knowing how to run an abominable criminal recidivist while the death penalty has been abolished, FBI experts and lawyers condemned the imagine embarking on a journey through time To a time when the sentence still applied. For financial reasons, this expedition is coupled with a scientific mission on the planet Terra and charge of tracing the first dinosaurs. They do exist, and while the crew was launched in pursuit of the prisoner at large.