The Unidentified pelycosaur was one of the animals seen in Jim Martin's storyboards for Jurassic World that did not appear in the final film. It was seen with a crested hadrosaur (likely Corythosaurus) and an unidentifiable ornithopod gathered around an early design of the Jurassic World Monorail.


Its identity is potentially the carnivorous Dimetrodon or the similar looking herbivore Edaphosaurus, though it is most likely the latter as the pelycosaur was with what appeared to be other herbivores.

If this pelycosaur had made it to the final cut of the film, it would have not only been the first synapsid to be featured in the films, but also the first prehistoric animal that lived before the dinosaurs.


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