The latest study resolves a debate about whether it is the first member of the chordate family. 这项最新的研究终结了一场关于它是否是脊椎动物家族中第一个成员的争论。
The middle zone of the mesoderm of a chordate vertebrate embryo, from which excretory tissue develops. the atmospheric layer between the mesosphere and the exosphere. 中胚叶节脊索类脊椎动物胚胎的中胚层的中间部分,最终会发育成排泄组织大气层中介于中间层和外层空间之间的一层。
Study on cave animals ( mollusc, arthropod and chordate) in anshun of Guizhou province 贵州安顺洞穴动物的研究&软体动物、节肢动物和脊索动物