 | Lance Lewman als Narrator |
 | Kirk Johnson als Himself - Denver Museum of Nature & Science |
 | Daniel Fisher als Himself - University of Michigan |
| Ian Miller als Himself - Denver Museum of Nature & Science |
| Joseph Sertich als Himself - Vertebrate Paleontologist |
| Eugene Schweig als Himself - United States Geological Survey |
| Richard Stucky als Himself - Denver Museum of Nature & Science |
| Howard Swartz | Executive Producer |
| David Condon | Development Producer |
| Eleanor Grant | Director |
| Drew Grimes | Associate Producer |
| Lisa Mirowitz | Producer |
| Laurie Cahalane | Coordinating Producer |
| Paula S. Apsell | Executive Producer |
| Karinna Sjo-Gaber | Associate Producer |
| Anne Tarrant | Producer |
| Eleanor Grant | Producer |
| Pamela Rosenstein | Development Producer |
| Stephen Sweigart | Supervising Producer |
| John B. Bredar | Executive Producer |
| Melanie Wallace | Producer |
| David Linstrom | Cinematography |
| Andrea Barrick | Editor |
