Sam Neill
Dr. Alan Grant
William H. Macy
Paul Kirby
Téa Leoni
Amanda Kirby
Alessandro Nivola
Billy Brennan
Trevor Morgan
Erik Kirby
Michael Jeter
Mr. Udesky
John Diehl
Cooper
Bruce A. Young
M.B. Nash
Laura Dern
Dr. Ellie Sattler
Taylor Nichols
Mark Degler
Mark Harelik
Ben Hildebrand
Julio Oscar Mechoso
Enrique Cardoso
Blake Michael Bryan
Charlie
Sarah Danielle Madison
Cheryl Logan
Linda Park
Hannah
Sonia Jackson
Symposium Leader
Bruce French
Science Reporter
Bernard Zilinskas
Male Student
Rona Benson
Female Student
Frank Clem
Man in Suit
Craig Hosking
Pilot
Rick Shuster
Pilot
Sean Coffey
Palentology Student (uncredited)
Karin M. Gaarder
Paleontology Student (uncredited)
Edward C. Gillow
University Professor at Symposium (uncredited)
Craig Richards
Billy's Bar Buddy (uncredited)
Brad Everett Young
Paleontology Student (uncredited)