director, Gillian Darling Kovanic ; narration written by Amanda McConnell and Bruce Martin ; produced by Tamarin Productions Inc. in association with the Discovery Channel, USA ... [and others]
Warner Bros. and Universal Pictures present a Guber-Peters production ; screenplay by Anna Hamilton Phelan ; story by Anna Hamilton Phelan and Tab Murphy ; produced by Arnold Glimcher, Terence Clegg ; directed by Michael Apted
a NOVA production by Erikson & Nilsson Production in association with WGBH/Boston ... [and others] ; medical photography, Lennart Nilsson ; produced, written by Julia Cort
an IMAX Natural History Film Unit production in association with the National Geographic Society and IMAX ; producer, Sally Dundas ; narration writer, Steve Lucas ; director, Adrian Warren
Dreamworks Pictures and Twentieth Century Fox ; a Cruise/Wagner, Blue Tulip, Ronald Shusett/Greg Goldman production ; directed by Steven Spielberg ; screenplay by Scott Frank and Jon Cohen ; produced by Gerald R. Molen, Bonnie Curtis, Walter F. Parkes, Jan De Bont