Cleaning up a weird scientist's messy study is a chore four kids decide to make short work of on a Saturday morning! The kids file animals into drawers according to their species, 'til they discover a replica of a dinosaur. They hesitate to dispense with the oldest creature on earth by filing it in the "EXTINCT" drawer! However, they soon find many surprises in store, including disagreement as to what creature actually is the oldest on earth, from four wisecracking and argumentative cockroaches eavesdropping from a shelf!
Unfortunately the movie Whatever Happened to the Dinosaurs? is not yet available on HBO Max.
| Directing | Ed Warnick | Director |
| Art | Brendan Watson | Art Direction |
| Production | Monica Hayes Anderson | Executive Producer |
| Camera | Peter Reniers | Director of Photography |
| Production | Robert Doran | Production Manager |
| Camera | Arte Shelton | Grip |
| Lighting | Gary Hildebrand | Gaffer |
| Camera | David Wilkins | Grip |
| Camera | Pedro Hernández | Grip |
| Production | Ginny Clapper | Executive In Charge Of Production |
| Lighting | Ken Seagren | Gaffer |
| Writing | Susan Kipp | Writer |
| Lighting | Kevin O'Connell | Gaffer |
| Lighting | Tom Defore | Gaffer |
| Lighting | Keith Salkowski | Gaffer |
| Production | John F.X. Anderson | Executive Producer |
| Art | Mark Kara | Production Design |
| Camera | Frank Kolarek, Jr. | Grip |
| Crew | McPaul Smith | Additional Dialogue |
| Directing | Meredith Mulholland | Script Supervisor |
| Production | Cynthia Hildebrand | Casting |
| Sound | Doug Fischer | Music Producer |
| Sound | Bob Abbott | Sound Recordist |
| Camera | Andy Lowe | Grip |
| Visual Effects | Mark Kara | Animation |
| Sound | Stuffy Shmitt | Original Music Composer |
| Sound | Michael Boyle | Sound Recordist |
| Production | Keith Brunner | Production Assistant |
| Sound | Dean Sarjeant | Sound Recordist |
| Costume & Make-Up | Judith Scheurwater | Makeup & Hair |
| Costume & Make-Up | Kathy Greene | Makeup & Hair |
| Production | Michael Durkin | Production Assistant |
| Production | Laura Livingston | Production Assistant |
| Camera | Erik Brondum | Assistant Camera |
| Camera | Paul Goroff | Grip |
| Camera | Rand Lechner | Assistant Camera |
| Sound | Stuffy Shmitt | Music Producer |
| Costume & Make-Up | Maureen Nathan | Makeup & Hair |
| Production | Courtney Hayes | Production Assistant |
| Sound | Doug Fischer | Original Music Composer |
| Camera | Blackford 'Boots' Shelton | Assistant Camera |
