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华北地块南部皖豫交界地区发育一套原认为属于新元古代的地层,在其下段新发现了布尔顿蜓(未定种)(Boultonia?sp.)、床板珊瑚(Tabulata)、光面石燕贝类群等化石和丰富的生物碎屑,如海百合茎骨片、海绵个体碎屑等,以及晚奥陶世似针牙形石(Belodina sp.).含宏体化石组合的地层为晚石炭世,它们属于碎屑流沉积,形成于碳酸盐斜坡沉积环境.牙形石化石可能为碎屑沉积.这一发现重新厘定了该区的地层时代及构造属性,它们属于北淮阳构造带,限定了寿县断裂为大别造山带和华北地块的边界.
A set of strata originally considered to belong to the Neoproterozoic are developed in the junction of Anhui and Henan in the southern part of North China Block. In the lower section, Boultonia? Sp., Tabulata, Fossils such as taxa and abundant biological debris, such as sea lily stalks, individual sponge fragments, etc., and Belodina sp. The strata containing macro-fossil assemblages are Late Carboniferous They belong to the deposition of debris flow and formed in carbonate depositional environment.The conodont may be detrital sediments.The discovery re-determined the stratigraphic age and tectonic attribute of the area, belonging to the northern Huaiyang tectonic belt , Which defines the Shouxian fault as the boundary between the Dabie orogenic belt and the North China block.