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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 Dallasaurus ： ウィキペディア英語版 Dallasaurus ''Dallasaurus'' ("Dallas lizard") is a basal mosasauroid from the Upper Cretaceous of North America. Along with ''Russellosaurus'', ''Dallasaurus'' is one of the two oldest mosasauroid taxa currently known from North America. This small semi-aquatic lizard measured less than a meter in length, compared to such gigantic derived mosasaurs as ''Tylosaurus'' and ''Mosasaurus'', each exceededing 15 meters. In appearance, it was similar to its closest living relative, the Komodo dragon.〔("'Dallasaurus' confirmed as key evolutionary link" ), MSNBC, 18 November 2005.〕 ==Specimens== The genus is based upon two partial skeletons recovered from the Arcadia Park Shale (lower Middle Turonian), approximately 15 meters above its contact with the older Kamp Ranch Limestone in Dallas County in north-central Texas. The holotype specimen (TMM 43209-1, Texas Memorial Museum, University of Texas at Austin) consists of an incomplete and disarticulated skull, along with considerable portions of the postcranial skeleton, making up about 80 percent of the animal.〔("Dino-Era Lizard Is Missing Link to Swimming Reptiles, Experts Say" ), ''National Geographic News'', 21 November 2005.〕 The second referred specimen (DMNH 8121-8125, 8143-8149, and 8161-8180, Dallas Museum of Natural History) lacks any skull material and consists entirely of disarticulated postcranial remains. The strata containing these fossils were temporarily exposed during excavations for a housing development, and both sites have now been reburied by construction. The two specimens were discovered about 100 meters from one another; the first was found by an amateur collector, Van Turner, for whom the type species (''Dallasaurus turneri'') was named.〔("SMU and Dallas Museum of Natural History Announce Missing Fossil Link Dallasaurus" ), Southern Methodist University, 16 November 2005.〕 The genus is named for Dallas County, where both specimens were found. 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「Dallasaurus」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.