Analyses also suggested that the two apparent declines in species diversity of fusulinacean fauna were related to the Early Permian fauna turnover and the Middle Permian extinction event.

• 而物种分异度的两次大幅度下降则分别反映了早二叠世的动物群更替事件及中二叠世集群灭绝事件对本地区（竹蜓）类动物的影响。