Joe Johnston Director Sam Neill Dr. Alan Grant Actor William H. Macy Paul Kirby Actor Téa Leoni Amanda Kirby Actor Alessandro Nivola Billy Brennan Actor Trevor Morgan Eric Kirby Actor Michael Jeter Udesky Actor John Diehl Cooper Actor Bruce A. Young Nash Actor Laura Dern Ellie Actor Taylor Nichols Mark Actor Mark Harelik Ben Hildebrand Actor Julio Oscar Mechoso Enrique Cardoso Actor Blake Michael Bryan Charlie Actor Sarah Danielle Madison Cheryl Actor Linda Park Hannah Actor Sonia Jackson Symposium Leader Actor Bruce French Science Reporter Actor Bernard Zilinskas Male Student Actor Rona Benson Female Student Actor Frank Clem Man in Suit Actor Peter Buchman Writer Alexander Payne Writer Jim Taylor Writer Michael Crichton Writer Kathleen Kennedy Producer Larry J. Franco Producer Steven Spielberg Executive Producer Shelly Johnson Cinematographer Ed Verreaux Production Design Robert Dalva Film Editing John Williams Original Theme Don Davis Original Music Nancy Foy Casting Betsy Cox Costume Design Jim Mitchell Visual Effects Supervisor David Womark Unit Production Manager David Streit Unit Production Manager Artist W. Robinson First Assistant Director Doug J. Meerdink Art Director