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厚椎龙属

厚椎龙属
化石时期:诺利阶
科学分类 编辑
界: 动物界 Animalia
门: 脊索动物门 Chordata
纲: 爬行纲 Reptilia
目: 离龙目 Choristodera
属: 厚椎龙属 Pachystropheus
von Huene, 1935
模式种
雷提库斯厚椎龙
Pachystropheus rhaeticus

von Huene, 1935

厚椎龙属学名Pachystropheus)是种已灭绝爬行动物,可能属于离龙目,生存于三叠纪晚期(诺利阶)的英格兰南部。在1935年,德国古生物学家弗雷德里克·冯·休尼(Friedrich von Huene)将牠们命名为厚椎龙属,当时归类于离龙目;属名意为“厚的脊椎”[1]。长期以来,厚椎龙受到古动物学界的忽视,直到1993年才被重新研究。如果厚椎龙属于离龙目,将使离龙类的化石纪录提早4500万年[2]。另有其他研究人员提出质疑,认为厚椎龙的脊椎、肩带等特征,可发现于其他水生爬行动物,并非离龙目所独有[3]。离龙目的大部分可鉴定特征来自于头颅骨,由于目前没有发现厚椎龙的头颅骨化石,难以确定厚椎龙属于离龙目[4]。另有研究人员发现,厚椎龙的身体特征,类似海龙目埃登那龙。这些类似特征显示厚椎龙、埃登那龙可能是近亲,但也有可能是适应水生生活的趋同演化结果[5]

参考资料

[编辑]
  1. ^ von Huene, Friedrich. Ein Rhynchocephale aus dem Rhat (Pachystropheus n. g.). Neües Jahrbuch fur Mineralogie, Geologie und Palaontologie. 1935, 74: 441–447 (德语). 
  2. ^ Storrs, G.W.; and Gower, D.J. The earliest possible choristodere (Diapsida) and gaps in the fossil record of semi-aquatic reptiles. Journal of the Geological Society. 1993, 150 (6): 1103–1107. doi:10.1144/gsjgs.150.6.1103. 
  3. ^ Ryoko Matsumoto, Shigeru Suzuki, Khisigjav Tsogtbaatar and Susan E. Evans. New material of the enigmatic reptile Khurendukhosaurus (Diapsida: Choristodera) from Mongolia. Naturwissenschaften. 2009, 96 (2): 233–242. doi:10.1007/s00114-008-0469-6. 
  4. ^ Ryoko Matsumoto and Susan E. Evans. Choristoderes and the freshwater assemblages of Laurasia. Journal of Iberian Geology. 2010, 36 (2): 253–274 [2012-12-18]. (原始内容存档于2020-08-25). 
  5. ^ Silvio Renesto. A possible find of Endennasaurus (Reptilia, Thalattosauria) with a comparison between Endennasaurus and Pachystropheus. Neues Jahrbuch für Geologie und Paläontologie - Monatshefte. 2005,. Jg. 2005 (2): 118–128. 
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厚椎龙属
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