Did the Stegosaurus Have Two Brains?

did-stegosaurus-two-brains Credit: Henry Burrows/CC-BY-SA 2.0

Even though there was a popular theory that Stegosaurus may have had two brains, one in its head and one toward its tail or rear end, that idea has largely been discredited in paleontology. Some paleontologists may still hold on to this theory and try to find ways that it might be true, but on the whole, this is not an accepted idea.

Scientists have long posited that the Stegosaurus must have had a comparatively tiny brain relative to its size, which may be the root of the two brain myth. However, there is no evidence to support the idea that this dinosaur had a separate brain to control its back half.