国际泥盆纪地层委员会(Subcommission on Devonian Stratigraphy,简称SDS)是国际地层委员会下属分会中最活跃的分会之一。在它的领导下,于1972年通过了志留一泥盆系界线的决定,在世界上建立了第一个界线层型。从理论、原则、方法上为其它地层界线的确立树立了样板。近几年来,SDS主要任务是解决泥盆系内部统与统,阶与阶间的界线,并已取 The Subcommission on Devonian Stratigraphy (SDS) is one of the most active chapters of subcommittees of the International Stratigraphy Commission. Under its leadership, the decision to mark the Devonian-Devonian boundary was passed in 1972, establishing the first strata boundary in the world. From the theory, principle and method, it establishes a model for the establishment of other stratigraphic boundaries. In recent years, SDS’s main task is to solve the Devonian system of internal and unified, order and the boundaries of the line, and has taken