There's No Such Thing As Stego-Claws Dinosaucers : Season 1 Episode 47

The Dinosaucers plan to go home for Merry Dinosaur Day but the Tyrannos spoil Bonehead's good cheer by telling him Stego-Claws doesn't exist. That night, Bonehead and David join Stego-Claws in trying to keep the Tyrannos from ruining Merry Dinosaur Day.