Adeopapposaurus, meaning “far eating lizard”, is a genus of prosauropod dinosaur from the Early Jurassic Period. It was found in the
CaÃ±Ã³n del Colorado Formation of San Juan, Argentina. It was described in 2009 by Ricardo N. MartÃnez. The type species, A. mognai, is named for the location where it was found.
Adeopapposaurus is known from four partial skeletons and two partial skulls. The form of the bones at the tips of the jaws suggests that it had keratinous (horny) beaks. The dinosaur was first thought to be a species of Massospondylus. While this is no longer the case, it is still classified as a massospondylid.