The tail of Microbrachis (Tetrapoda; Microsauria)
The tail of Microbrachis (Tetrapoda; Microsauria)
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小腕龙（四足亚目；小龙类）的尾巴
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
A. Milner
中科院分区：
文献类型：
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作者：
A. Milner
先前未被描述的来自捷克共和国上石炭纪的Microbrachis pelikani Fritsch标本，证明了一个由多达46个后骶椎支撑的适应深水游泳的尾巴。尾巴似乎随着个体发育而变长。大多数的微龙似乎是陆栖的，因为这个族群被认为是与恐龙有亲缘关系，所以所有的微龙（包括微臂龙）都被重建为有细长的锥形尾巴。微臂龙似乎是微型龙的早期分支，目前还不清楚深尾是该属的原始保留还是后天获得的特征。
Previously undescribed specimens of the aquatic microsaur Microbrachis pelikani Fritsch from the Upper Carboniferous of Nýřany, Czech Republic, demonstrate the presence of a deep-swimming-adapted tail supported by up to 46 postsacral vertebrae. The tail appears to have lengthened with ontogeny. Most microsaurs appear to have been terrestrial and because the group has been perceived to be related to the amniotes, all (including Microbrachis) had been reconstructed with slender tapering tails. Microbrachis appears to be an early offshoot of the microsaurs and it is unclear whether the deep tail is a primitive retention or an acquired characteristic of the genus.