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浮龍屬

浮龙属
化石时期:70–66 Ma
白堊紀晚期
科学分类 编辑
界: 动物界 Animalia
门: 脊索动物门 Chordata
纲: 爬行綱 Reptilia
目: 有鳞目 Squamata
总科: 滄龍總科 Mosasauroidea
科: 滄龍科 Mosasauridae
亚科: 沧龙亚科 Mosasaurinae
属: 浮龙属 Plotosaurus
Camp, 1951
模式種
Plotosaurus bennisoni
(Camp, 1942) Camp, 1951
  • 本尼森浮龍 P. bennisoni
    (Camp, 1942) Camp, 1951
  • 特氏浮龍 P. tuckeri
    (Camp, 1942) Camp, 1951
異名
  • Kolposaurus
    Camp, 1942
  • Garzasaurus
    Anderson, 1943 (疑名)

浮龍屬學名Plotosaurus)又称游龙属,意為「游泳的蜥蜴」,是滄龍科的一屬,生存於白堊紀晚期(馬斯垂克階),化石發現於加州費雷斯諾縣。浮龍最初在1942年由柏克萊大學的古生物學家Charles Lewis Camp命名為Kolposaurus,意为海湾蜥蜴;在1951年,Camp發現已有一種幻龍類使用這個名稱,因此改為現名。

體徵

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浮龍的想像圖

在滄龍類中,浮龍具有數個獨有特徵。牠們的鰭狀肢狹窄、尾鰭大、身體呈流線型[1],游泳速度可能比其他滄龍類快。浮龍的眼睛也相當大[1]

分類

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根據親緣分支分類法研究,浮龍可能是種相當衍化的滄龍類。模式種P. bennisoni,種名是以發現化石的Allan Bennison為名,他在1937年發現浮龍的化石。P. bennisoni的身長約9公尺,是加州第一個發現的滄龍類。

第二個種是P. tuckeri,是在1937年由Frank Paiva與William M. Tucker發現。P. tuckeri的體長約13公尺,大於P. bennisoni約40%。後者對水生環境的適應程度較前者差。

參考資料

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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.

外部連結

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浮龍屬
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