Kirk Johnson
饰 Himself - Denver Museum of Nature & Science
Daniel Fisher
饰 Himself - University of Michigan
Ian Miller
饰 Himself - Denver Museum of Nature & Science
Joseph Sertich
饰 Himself - Vertebrate Paleontologist
Eugene Schweig
饰 Himself - United States Geological Survey
Richard Stucky
饰 Himself - Denver Museum of Nature & Science
