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浮龙属

浮龙属
化石时期:70–66 Ma
白垩纪晚期
科学分类 编辑
界: 动物界 Animalia
门: 脊索动物门 Chordata
纲: 爬行纲 Reptilia
目: 有鳞目 Squamata
总科: 沧龙总科 Mosasauroidea
科: 沧龙科 Mosasauridae
亚科: 沧龙亚科 Mosasaurinae
属: 浮龙属 Plotosaurus
Camp, 1951
模式种
Plotosaurus bennisoni
(Camp, 1942) Camp, 1951
  • 本尼森浮龙 P. bennisoni
    (Camp, 1942) Camp, 1951
  • 特氏浮龙 P. tuckeri
    (Camp, 1942) Camp, 1951
异名
  • Kolposaurus
    Camp, 1942
  • Garzasaurus
    Anderson, 1943 (疑名)

浮龙属学名Plotosaurus)又称游龙属,意为“游泳的蜥蜴”,是沧龙科的一属,生存于白垩纪晚期(马斯特里赫特阶),化石发现于加州费雷斯诺县。浮龙最初在1942年由柏克莱大学的古生物学家Charles Lewis Camp命名为Kolposaurus,意为海湾蜥蜴;在1951年,Camp发现已有一种幻龙类使用这个名称,因此改为现名。

体征

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浮龙的想像图

在沧龙类中,浮龙具有数个独有特征。牠们的鳍状肢狭窄、尾鳍大、身体呈流线型[1],游泳速度可能比其他沧龙类快。浮龙的眼睛也相当大[1]

分类

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根据亲缘分支分类法研究,浮龙可能是种相当衍化的沧龙类。模式种P. bennisoni,种名是以发现化石的Allan Bennison为名,他在1937年发现浮龙的化石。P. bennisoni的身长约9米,是加州第一个发现的沧龙类。

第二个种是P. tuckeri,是在1937年由Frank Paiva与William M. Tucker发现。P. tuckeri的体长约13米,大于P. bennisoni约40%。后者对水生环境的适应程度较前者差。

参考资料

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  1. ^ 1.0 1.1 Palmer, D. (编). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. 1999: 87. ISBN 1-84028-152-9. 
  • Camp, C.L. 1942. California Mosasaurs. Memoirs of the University of California 13. Berkeley and Los Angeles: University of California Press.
  • Camp, C.L. 1951. Plotosaurus, a new generic name for Kolposaurus Camp, preoccupied. Journal of Paleontology 25: 822.
  • Hilton, R.P. 2003. Dinosaurs and Other Mesozoic Reptiles of California. Berkeley and Los Angeles: University of California Press. ISBN 0-520-23315-8
  • Lindgren, J., Jagt, J.W.M., and Caldwell, M.W. 2007. A fishy mosasaur: the axial skeleton of Plotosaurus (Reptilia, Squamata) reassessed. Lethaia 40:153-160.
  • Lindgren, J., Caldwell, M.W. and Jagt, J.W.M. 2008. New data on the postcranial anatomy of the California mosasaur Plotosaurus bennisoni (Camp, 1942) (Upper Cretaceous: Maastrichtian), and the taxonomic status of P. tuckeri (Camp, 1942). Journal of Vertebrate Paleontology 28(4):1043-1054.
  • Lindgren, J., Alwmark, C., Caldwell, M.W., and Fiorillo, A.R. 2009. Skin of the Cretaceous mosasaur Plotosaurus: implications for aquatic adaptations in giant marine reptiles. Biology Letters doi:10.1098/rsbl.2009.0097.

外部链接

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浮龙属
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