The code of Dinotopia, for whatever reason, is taken out of order from the book. Specifically, rules #1 (Survival of all or none) and #2 (One raindrop raises the sea) were switched. As well, the final, missing code (Don't p...) was replaced with "Find the light." These changes ruin a hidden 12th Dinotopian code, as when the first letter of all eleven codes are combined, it spells "Sow good seed," though with the shows changes, it spells "Osw good seef."
In the books, Ogthar, the king of the sunken city of Poseidos, has a ceratopsian head with leafy frills and a human body. In the show, the head was replaced with that of a hadrosaur.