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Magnapaulia
''Magnapaulia'' is a genus of herbivorous lambeosaurine dinosaur 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-Márquez and colleagues.〔
==Discovery and naming==
Between 1968 and 1974, a team of the Natural History Museum of Los Angeles County headed by geologist William J. Morris excavated giant lambeosaurine remains from a site near El Rosario in Baja California. Morris named them ?''Lambeosaurus laticaudus'' in 1981, based on type specimen LACM 17715, a partial skeleton with partial skull. Morris added a question mark to the front of the generic name to indicate its provisional nature: because no complete crest had been found for his species, and without it a definitive assignment could not be made. From what was known of the skull, he considered it to be most like ''Lambeosaurus''. The specific name is derived from the Latin ''latus'', "broad", and ''cauda'', "tail". Morris interpreted this species as water-bound, due to features like its size, its tall and narrow tail (interpreted as a swimming adaptation), and weak hip articulations, as well as a healed broken thigh bone that he thought would have been too much of a handicap for a terrestrial animal to have survived long enough to heal.〔 Between 1981 and 2012, other authors accepted it as a potential species of ''Lambeosaurus'', suggested it could instead be a species of ''Hypacrosaurus'', or questioned its validity.〔
In 2012 it was named as a separate genus by Albert Prieto-Márquez, Luis Chiappe, and Shantanu Joshi. The generic name is a combination of the Latin ''magnus'', "large", and the first name of Paul G. Haaga, Jr., the president of the board of trustees of the Los Angeles County Museum of Natural History. The 2012 study indicated that the remains had been found in a layer of the El Gallo Formation, dating to the late Campanian, about 73.6 to 73 millions years old. The study referred numerous other specimens to the species: LACM 17698, 17699, 17700, 17702-17713, 17716 and 17717; LACM 20873-20876; and LACM 20883-20885. These had been found within a distance of three metres to the holotype and consist of partial skeletons, separate bones and skin impressions from several individuals, varying in size. In 2012 a complete redescription of the body parts was given.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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