Factual error: When the boys are sent back to the Cretaceous era, they come across a leptictidium, a small, bipedal mammal they call "Leppy." Leptictidium were not around in the cretaceous, they didn't appear until around ten million years after the dinosaurs went extinct, in the early Paleogene. They also lived in Europe, not North America.
The Adventures of Jimmy Neutron: Boy Genius (2002)
Episode list - season 4
Starring: Rob Paulsen, Debi Derryberry, Jeffrey Garcia, Mark DeCarlo
More mistakes in The Adventures of Jimmy Neutron: Boy Genius
Sheen: Jimmy, where's the bathroom? All I see is sand and I'm not a cat.
Who's Your Mommy/Clash of the Cousins - S3-E9
Trivia: One of Jimmy's Uncle's (Baby Eddie's father) is a self caricature of the show's creator, John A. Davis.
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