The exospore is smooth and the surface ornamentation is formed by the perispore.
外壁光滑。 周壁较厚，由周壁形成孢子的表面纹饰。
This photo shows only the carapace, with their distinctive reticulate surface ornamentation.
这张照片显示，只有在胸甲，其独特的网状面装饰品。
The most of the surface ornamentation is compound and may be divided into three types under SEM: (1)Reticulate—verrucate.
根据纹饰特点的不同，可分为三种类型：（1）网——瘤状复合纹饰；
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