 PLOT: The ship carrying the tyrannosaur arrives in San Diego with  the crew having all been killed. A severed arm is found holding the  controls for the doors on the tyrannosaurs holding cell. When the  ship arrives, the doors are trying to open, but are neither able to  fully open nor fully close. Only when a dock worker hits the switch  to open those doors does the tyrannosaur escape, which means the  tyrannosaur itself could not have cause all this damage on board.  This is due to a section of original script being left out, where  Raptors get aboard the ship and cause all the massacre.