於1877年,奧塞內爾·查利斯·馬什(Othniel Charles Marsh)公布一個新的蜥腳類恐龍,埃阿斯迷惑龍(Apatosaurus ajax)。在1879年,馬什將另一個更為完整的標本成立為新屬,秀麗雷龍(Brontosaurus excelsus)。在1903年,埃爾默·里格斯(Elmer S. Riggs)發現秀麗雷龍與埃阿斯迷惑龍非常類似,應為同種動物,於是將秀麗雷龍改為秀麗迷惑龍。根據國際動物命名委員會的規定,由於迷惑龍首先被公布,故其名稱具有優先權。所以雷龍被認為是迷惑龍的次異名,成為非正式用法。之前廣為人知的雷龍圖片,於1970年代被人發現是秀麗迷惑龍(Apatosaurus excelsus)加上圓頂龍的頭部[6]。
然而,近代以羅伯特·巴克(Robert T. Bakker)為首的古生物學家重新檢視化石證據,結果發現雷龍屬和迷惑龍的在頸部與頭部的骨骼特徵差異頗大,重新激起了迷惑龍和雷龍分類的討論,雷龍有可能重新獲得屬的地位。[7]
^Holtz, Thomas R. Jr. (2008)Dinosaurs: The Most Complete, Up-to-Date Encyclopedia for Dinosaur Lovers of All AgesSupplementary Information (页面存档备份,存于互联网档案馆)
^Foster, J. (2007). "Appendix."Jurassic West: The Dinosaurs of the Morrison Formation and Their World. Indiana University Press. pp. 327-329.
^Taylor, M.P. and Naish, D. (2005). "The phylogenetic taxonomy of Diplodocoidea (Dinosauria: Sauropoda)."PaleoBios,25(2): 1-7. (downloadhere (页面存档备份,存于互联网档案馆))
^Harris, J.D. (2006). "The significance ofSuuwassea emiliae (Dinosauria: Sauropoda) for flagellicaudatan intrarelationships and evolution."Journal of Systematic Palaeontology,4(2): 185–198.
^Lovelace, David M.; Hartman, Scott A.; Wahl, William R. Morphology of a specimen ofSupersaurus (Dinosauria, Sauropoda) from the Morrison Formation of Wyoming, and a re-evaluation of diplodocid phylogeny. Arquivos do Museu Nacional. 2007,65 (4): 527–544.
^McIntosh JS. & Berman DS. (1975): Description of the palate and lower jaw of the sauropod dinosaurDiplodocus (Reptilia: Saurischia) with remarks on the nature of the skull ofApatosaurus.Journal of Paleontology 49(1): 187-199
^Tschopp E, Mateus O, Benson RBJ. (2015) A specimen-level phylogenetic analysis and taxonomic revision of Diplodocidae (Dinosauria, Sauropoda) PeerJ 3:e857
^Upchurch, P,; et al."Neck Posture of Sauropod Dinosaurs"(PDF).Science 287, 547b (2000); DOI: 10.1126/science.287.5453.547b. 2000 [2008-08-05]. (原始内容存档(PDF)于2007-06-21).
^Taylor, M.P., Wedel, M.J., and Naish, D. (2009). "Head and neck posture in sauropod dinosaurs inferred from extant animals".Acta Palaeontologica Polonica 54 (2), 2009: 213-220abstract (页面存档备份,存于互联网档案馆)
^(英文)Paladino, F.V., Spotila, J.R., and Dodson, P., A Blueprint for Giants: Modeling the Physiology of Large Dinosaurs, Farlow, J.O. and Brett-Surman, M.K. (编), The Complete Dinosaur, Indiana University Press: 491–504, 1997,ISBN 0253213134
^Zimmer, C. (1997). "Dinosaurs in Motion."Discover, 1 Nov 1997.[1] (页面存档备份,存于互联网档案馆) Accessed 16 Apr 2008.