Carnosaur 2 (1995)
Carnosaur 2 is a 1995 low budget sequel to Carnosaur, and the second of the Carnosaur franchise. It has a similar plot to Aliens, about a team of scientists who go to a nuclear mining facility to investigate a possible meltdown and instead find a large amount of cloned dinosaurs who have been hidden there after the events of the first film.
More at Wikipedia.