长刺泡沫状珊瑚(Gyalophylloides Cao 1975)属骨骼微细构造的电镜研究

Gyalophylloides Cao 1975属的电镜研究表明,其骨骼构造以方解石晶片组成的层状骨骼为主,它形成壁部构造和横列构造,在隔壁之间充填联结,在隔壁内包绕隔壁刺,在隔壁刺内联结和包绕杆状体。本属纤状骨骼的组成单元是晶粒和短轴晶柱,它们只见于杆状体轴部。文中还描述了本属的两个新种。

A SEM STUDY OF THE MICROSKELETAL STRUCTURES OF GYALOPHYLLOIDES CAO 1975

In this paper two new species, Gyalophylloides ningqiangensis and G. dazhubaensis are described and the minute skeletal structures of Gyalophyllum are illustrated.Lamellar structures are undoubtedly primary in origin and the fundamental skeletal unit is calcite flakes. They compose the wall,the transverse skeletons and connect the septa in the wide peripheral stereozone. They also invest the septal spines within the septa and connect the rhabdacanths within the septal spines. They show various features in different orientations, which are always parallel to the secreting ectodermal surface. The fibrous skeleton is poorly developed and only occurs along the axial part of the rhabdacanth. The fundamental unit is calcite grains and calcite brachy-prisms.