The stele withpith in middle part of CNZ was mesarch and diarch siphonostele.
The stele withpith in middle part of CNZ was mesarch and diarch siphonostele.
中部出现具髓的中始式二原型管状中柱阶段;
The stele withpith in middle part of CNZ was mesarch and diarch siphonostele.
中部出现具髓的中始式二原型管状中柱阶段;