基金the Ministry of Science & Technology China,Basic Research Project ( G99-A-0 5 ) ,Basic Science Research Program of theChinese Academ y of Sciences( KZ95 2 -J1-4 0 1) and the Innovation Fund of Nanjing Institute of Geology and Palaeontology,Chinese Aca
文摘新疆柯坪大湾沟和甘肃平凉官庄剖面是 N emagraptus gracilis带及上奥陶统底界的重要剖面 ,研究这两剖面的牙形刺具有十分重要的意义。本文描述了采自新疆柯坪大湾沟和甘肃平凉官庄剖面上奥陶统底界附近的牙形刺共 13属