Analyses of the extinction process of fusulinacean in the Maokouan (Middle Permian) biotic crisis have revealed remarkab......

贵州省紫云县宗地乡下二叠统隆林阶实测地层剖面中含(竹蜓)类化石8属21种.就(竹蜓)类动物群的特征分子及属种分异度等而言,宗地剖......