孔隙类型以粒间孔为主，喉道类型以点状、片状和弯片状喉道为主，连通性一般。
Pore types are mainly intergranular pore, throat types are mainly point, plates and curved sheet throat, general pore connectivity.
周壁具有裂片状、弯裂片状或瘤状突起。
Type II is characterized by having curved-lobate , lobate or tuberculate processes on the perine.
周壁具有裂片状、弯裂片状或瘤状突起。
Type II is characterized by having curved-lobate , lobate or tuberculate processes on the perine.
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