William H. Macy
Paul Kirby
Tea Leoni
Amanda Kirby
Alessandro Nivola
Billy Brennan
Trevor Morgan
Eric Kirby
Michael Jeter
Udesky
John Diehl
Cooper
Bruce A. Young
Nash
Laura Dern
Ellie
Taylor Nichols
Mark
Mark Harelik
Ben Hildebrand
Julio Oscar Mechoso
Enrique Cardoso
Blake Michael Bryan
Charlie
Sarah Danielle Madison
Cheryl
Linda Park
Hannah
Sonia Jackson
Symposium Leader
Bruce French
Science Reporter
Bernard Zilinskas
Male Student
Rona Benson
Female student
Frank Clem
Man In Suit
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)
