強龍屬

强龙属
化石时期:上白堊紀66 Ma
1901年繪製的強龍想像圖
无效状况
科学分类 编辑
界: 动物界 Animalia
门: 脊索动物门 Chordata
纲: 蜥形纲 Sauropsida
总目: 恐龍總目 Dinosauria
目: 鸟臀目 Ornithischia
亚目: 鸟脚亚目 Ornithopoda
科: 鴨嘴龍科 Hadrosauridae
亚科: 栉龙亚科 Saurolophinae
属: 强龙属 Thespesius
Leidy, 1856
模式種
西方強龍
Thespesius occidentalis

Leidy, 1856
異名
  • Agathaumas milo Cope, 1874

強龍屬(屬名:Thespesius)意為「不可思議的個體」,是鴨嘴龍科恐龍的一個疑名,化石只有兩個尾椎與一個趾骨,發現於南達科他州蘭斯組,年代起初被認為是中新世,現在被認為是上白堊紀的晚馬斯垂克階[1]

在1855年,地質學家Ferdinand Vandiveer Hayden將他發現的一些化石,寄給在費城的古生物學家約瑟夫·萊迪(Joseph Leidy)。這些化石發現於內布拉斯加領地(現在的南達科他州),包含兩節尾椎、一個趾骨。在1856年,約瑟夫·萊迪將這三個化石命名為西方強龍Thespesius occidentalis),屬名在古希臘文意為「不可思議的」,意指這些化石的巨大體型。種名在拉丁文意指「西方的」。由於Hayden宣稱化石發現於第三紀中新世的地層,化石有可能來自於哺乳類,萊迪在命名時沒有使用常見的恐龍字根"saurus",但萊迪認為這些化石屬於某種恐龍。

分類

強龍的化石

如同被約瑟夫·萊迪(Joseph Leidy)命名的糙齒龍,牠們擁有非常複雜的分類歷史,但被現代恐龍古生物學家所廢除[2][3]

目前有兩個種是從強龍屬所獨立出來的:薩克其萬強龍(T. saskatchewanensis[4]目前被認為是薩斯喀徹溫埃德蒙頓龍[5][6]埃德蒙頓強龍(T. edmontoni[7]目前被認為跟埃德蒙頓龍Edmontosaurus annectens是同一種動物[5][6]。以上兩個種曾被分類於鴨龍長達多年[8]

參考資料

  1. ^ Leidy, J. (1856). Notice of extinct Vertebrata, discovered by Dr. F. V. Hayden during the expedition to the Sioux country under the command of Lieut. G.K. Warren. Proceedings of the Academy of Natural Science Philadelphia 8:311-312.
  2. ^ Creisler, B.S. (2006). Deciphering duckbills. in: K. Carpenter (ed.), Horns and Beaks: Ceratopsian and Ornithopod Dinosaurs. Indiana University Press: Bloomington and Indianapolis, 185-210. ISBN 0-253-34817-X
  3. ^ Creisler, B.S. (2007). Deciphering duckbills. in: K. Carpenter (ed.), Horns and Beaks: Ceratopsian and Ornithopod Dinosaurs. Indiana University Press: Bloomington and Indianapolis, 185-210. ISBN 0-253-34817-X
  4. ^ Sternberg, C.M. (1926). A new species of Thespesius from the Lance Formation of Saskatchewan. Canada Department of Mines Geological Survey Bulletin (Geological Series) 44(46):73-84.
  5. ^ 5.0 5.1 Weishampel, D.B., and Horner, J.R. (1990). Hadrosauridae. In: Weishampel, D.B., Dodson, P., and Osmólska, H. (eds.). The Dinosauria. University of California Press:Berkeley, 534-561. ISBN 0-520-24209-2
  6. ^ 6.0 6.1 Horner, J.R., Weishampel, D.B., and Forster, C.A. (2004). Hadrosauridae. In: Weishampel, D.B., Dodson, P., and Osmólska, H. (eds.). The Dinosauria (second edition). University of California Press:Berkeley, 438-463. ISBN 0-520-06727-4
  7. ^ Gilmore, C.W. (1924). A new species of hadrosaurian dinosaur from the Edmonton Formation (Cretaceous) of Alberta. Canada Department of Mines Geological Survey Bulletin (Geological Series) 38(43):13-26.
  8. ^ Lull, R.S., and Wright, N.E. (1942). Hadrosaurian Dinosaurs of North America. Geological Society of America Special Paper 40:1-242.

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