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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Alamosaurus ： ウィキペディア英語版 Alamosaurus ''Alamosaurus'' (; meaning "Ojo Alamo lizard") is a genus of titanosaurian sauropod dinosaurs, containing a single known species, ''Alamosaurus sanjuanensis'', from the late Cretaceous Period of what is now southern North America. Isolated vertebrae and limb bones indicate that it reached sizes comparable to ''Argentinosaurus'' and ''Puertasaurus'', which would make it the largest dinosaur known from North America.〔 Its fossils have been recovered from a variety of rock formations spanning the Maastrichtian age of the late Cretaceous period. Specimens of a juvenile ''Alamosaurus sanjuanensis'' have been recovered from only a few meters below the Cretaceous-Paleogene boundary in Texas, making it among the last surviving non-avian dinosaur species.〔 ==Description== ''Alamosaurus'' was a gigantic quadrupedal herbivore with a long neck and tail and relatively long limbs.〔 Its body was at least partly covered in bony armor.〔 Though most of the complete remains come from juvenile or small adult specimens, three fragmentary specimens, SMP VP−1625, SMP VP−1850 and SMP VP−2104, suggest that adult ''Alamosaurus'' could have grown to enormous sizes comparable to the largest known dinosaurs like ''Argentinosaurs'', which has been estimated to weigh .〔 The total estimate length of ''Alamosaurus'' ranges between 79 to 100 feet (24 to 30 meters) long; the shoulder height is estimated between 19.5 to 24.7 feet (5.9 to 7.5 meters) tall. Though no skull has ever been found, rod-shaped teeth have been found with ''Alamosaurus'' skeletons and probably belonged to this dinosaur.〔 The vertebrae from the middle part of its tail had elongated centra.〔 ''Alamosaurus'' had vertebral lateral fossae that resembled shallow depressions.〔 Fossae that similarly resemble shallow depressions are known from ''Saltasaurus'', ''Malawisaurus'', ''Aeolosaurus'', and ''Gondwanatitan''.〔 ''Venenosaurus'' also had depression-like fossae, but its "depressions" penetrated deeper into the vertebrae, were divided into two chambers, and extend farther into the vertebral columns.〔 ''Alamosaurus'' had more robust radii than ''Venenosaurus''.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Alamosaurus」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.