The Carnosaur film series are a series of four B-movies produced by Roger Corman that feature genetically engineered dinosaurs running amok in various scenarios. The series started with the first Carnosaur film, released in 1993, that was loosely based on a novel by John Brosnan but was more similar to the Jurassic Park film which was based on the novel by Michael Crichton. The first sequel, Carnosaur 2, followed in 1995, while the third, Carnosaur 3: Primal Species, and fourth film, Raptor, were released direct-to-video in 1996 and 2001, respectively. The first three films were released to Region 1 DVD on February 6, 2001 as the "Carnosaur Collector's Set". All of the films have since gone out of print and are hard to obtain, though copies of DVD and VHS can be found online, and are occasionally shown on the Syfy channel.