|Named By:||Albert PrietoinMarquez, Luis Chiappe & Shantanu Joshi in 2012|
|Time Period:||Late Cretaceous, 73.6-73 Ma|
|Location:||Baja California - El Gallo Formation|
|Size:||Estimated 12.5 meters long|
|Fossil(s):||Partial post cranial and skull remains, as well as attributed skin impressions|
|Classification:||| Chordata | Reptilia | Dinosauria | Ornithischia | Ornithopoda | Hadrosauridae | Euhadrosauria | Lambeosaurinae ||
|Also known as:||| Lambeosaurus laticaudus ||
Magnapaulia is a genus of herbivorous lambeosaurine hadrosaurid dinosaurs known from the Latest Cretaceous Baja California, of northwestern Mexico. It contains a single species, Magnapaulia laticaudus. Magnapaulia was first described in 1981 as a possible species of Lambeosaurus by William J. Morris, and was given its own genus in 2012 by Prieto-Marquez and colleagues.