世界地质（英文版）
世界地質（英文版）
세계지질（영문판）
GLOBAL GEOLOGY
2007年
1期
1-5
,共5页
Berh Hairhan Formation%conodonts%Middle Devonian%Eifelian Stage%Mongolia
Conodont Caudicriodus angustus angustus(Steward et al.,1956)and Caudicriodus angustus cauda(Wang et al.,2005)were found from a big limestone lens of the Berh Hairhan Formation in the place of W 150 km to Ulaanbaatar City.The discovery indicates that the Berh Haihan Formation should be assigned to Middle Devonian Eifelian Stage.This conodont fauna was from a shallow cooler water facies in the relatively high latitude.
