T-Rex: Back to the Cretaceous is a 1998 American educational adventure film shot for the IMAX 3D format. The film is directed by Brett Leonard. Executive producer/co-writer Andrew Gellis and producers Antoine Compin and Charis Horton also make up the production team. Liz Stauber and Peter Horton star, alongside Kari Coleman, Tuck Milligan, and Laurie Murdoch. When a museum accident transports teenager Ally Hayden on an adventure back in time, she explores the terrain and territory of life-sized dinosaurs, even during a nose-to-nose encounter with a female Tyrannosaurus. The film is among the few IMAX films that are considered "pure entertainment", though it still is considered rather educational by the mainstream audience.