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Monster of Aramberri
The "monster of Aramberri" is the denomination that was given to the fossil remains of a huge marine reptile, a giant carnivore belonging to the Pliosauroidea clade that was found in Aramberri, Nuevo León, Mexico by a student of the Facultad de Ciencias de la Tierra of the Universidad Autónoma de Nuevo León while conducting geological mapping in 1985.〔Buchy, Frey & al, 2003, (''First occurrence of a gigantic pliosaurid plesiosaur in the late Jurassic (Kimmeridgian) of Mexico'' ), Bulletin de la Société Géologique de France, t. 174, n°3, pp. 271-278〕
== Speculations on size and ontogenetic stage ==
It was originally estimated that the remains belonged to a young individual which was more or less 15 meters long (both claims are questionable), claims of the specimen being 18 meters long were created by media.〔 It was initially falsely identified as ''Liopleurodon ferox''; this conclusion was used in BBC's Walking with Dinosaurs, in which the individual was the base to depict a very big ''Liopleurodon''. French and German paleontologists classified it as a giant pliosaur, which lived around 140 millions years ago in shallow waters of the area, in what is now Aramberri, Mexico.
The specimen is not properly named and described yet though the first assumptions of it being a juvenile individual have been outdated and that it is apparently not related to ''Liopleurodon ferox''.
It remains possibly one of the largest pliosaur known, and perhaps the largest,〔(Mine’s bigger than yours! The Monster of Aramberri, Predator X, and other monster pliosaurs in the media at Plesiosaur Bites ) plesiosaria.com〕 even though recent size estimates that compare the cervical vertebrae of the Aramberri pliosaur with those of Kronosaurus (possibly a close relative〔Eberhard Frey and Wolfgang Stinnesbeck ''Plesiosaurs, Reptiles between Grace and Awe'' In: Héctor E. Rivera-Sylva, Kenneth Carpenter, Eberhard Frey (2014) ''Dinosaurs and Other Reptiles from the Mesozoic of Mexico'', ''Indiana University Press'', p.88〕) yield smaller estimates, i.e. a mean length of 11.7 meters and a mean body mass of 15 metric tonnes.〔
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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