Harvey Birdman, Attorney at Law

Verizon's "Can You Hear Me Now?" Guy: When Harvey is searching for cell phone reception the Verizon Guy is standing on a rock, Says "Can you hear me now?" then is snatched-up by a Pterodactyl, and screams "Anytime Minutes!" He is also seen when Phil, Peanut, and the star trek red shirt guy arrive in the past.

Captain Caveman: You can briefly see Captain Caveman at the end of this episode, while Phil is fighting off other cave-men. For more information on Captain Caveman, see Evolutionary War.

Depeche Mode: Harvey's cell-phone ring tune is "I Just Can't Get Enough" by Depeche Mode.

Beyond the Valley of the Dolls: Beyond The Valley of the Dolls is an over-the-top drama movie, satirically based on earlier film called The Valley of the Dolls. Similiarly, this episode, Beyond The Valley of the Dinosaurs is satirically referencing the television series, The Valley of the Dinosaurs.

Titanic: When the cavemen are drawing a portrait of the Potamus, he is sitting upright. Yet, the drawing is a nude of him lying on his side, very similiar to the portrait of Kate Winslet from 'The Titanic'.

Valley of the Dinosaurs: The title of this episode is a reference to the 1974 animated series Valley of the Dinosaurs.

Dino Boy in the Lost Valley: Dino Boy in the Lost Valley was an animated television series produced by Hanna-Barbera Productions. It first aired on CBS September 10, 1966 as part of Space Ghost and Dino Boy and ended on September 7, 1968. Ugh was a character on that show as well as many other dinosaurs and cavemen. A total of 18 episodes of Dino Boy were made.