The Sauropod That Never Was: Why One Speculative Dinosaur Fails
Speculative Sauropods
Paleontologist Matt Wedel surveys speculative sauropods, from Memo Kösemen's Brontosapiens to Dougal Dixon's Turtosaur, then singles out Diablosaurus from The World of Kong as a failure: a dinosaur squeezed into a rhinoceros shape and mislabeled an aberrant sauropod despite an ornithischian pelvis. The critique inspired his Sauropod Heresies work on the real limits of the sauropod body plan.
I guess some Camarasaurus finally got drunk enough to evolve into an ornithischian and then into a mammal-shaped ornithischian.