Whether they are a peculiar sister group, or the ur-snake from which all others descend?
它们究竟是一种特殊的分支种群，还是其他各种蛇类的鼻祖？
The new findings could advance the ongoing debate on the phylogenetic status of hind-limbed snakes-whether they are a peculiar sister group or the ur-snake from which all others descend.
这项新发现可以推进有关后足蛇类在种族演化进程中的地位的不休争论——他们究竟是一种特殊的分支种群，还是其他各种蛇类在遗传意义上的鼻祖？
Conclusion: The upper cervical respiratory ne ur on group receives afferent projections from pontine and medullary respiratory re lated structures.
结论：高位颈髓呼吸神经元群接受发自脑桥及延髓呼吸相关结构的纤维投射。
Conclusion: The upper cervical respiratory ne ur on group receives afferent projections from pontine and medullary respiratory re lated structures.
结论：高位颈髓呼吸神经元群接受发自脑桥及延髓呼吸相关结构的纤维投射。
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