On the Morphological Complexity of the Graptolite Tubaria in the Darriwilian(Middle Ordovician)

作     者：MA Xuan ZHANG Yuandong 

作者机构：University of ChineseAcademy of Sciences19 Yuquan RoadBejingChina CAS Key Laboratory of Economic Stratigraphy and PalaeogeographyNanjing Institute of Geology and Palaeontology39 East Bejing RoadNanjingChina 

出 版 物：《Acta Geologica Sinica(English Edition)》 (地质学报（英文版）)

年 卷 期：2019年第93卷第S1期

页      面：135-137页

核心收录：

学科分类：0710[理学-生物学] 07[理学] 071004[理学-水生生物学] 

基　　金：funded by the financial support from the National Natural Science Foundation of China(Grant No.41772005) the Chinese Academy of Sciences(Grant Nos.XDB10010100,XDB26000000) the Ministry of Science and Technology of China(Grant Nos.2013FY111000,2017ZX05036-001-004) IGCP Project 653’The Onset of the Great Ordovician Biodiversification Event’ 

主　　题：Complexity graptolite tubaria Ordovician Darriwilian 

摘      要：1 Introduction As one of the major zooplanktonic organisms in the Ordovician and Silurian marine ecosystems,graptolites played a unique role in the GOBE(Great Ordovician Biodiversification Event)and underwent a considerable variation of diversities both in lifestyle and in speciation through the Ordovician(Sadler et al.,2011;Cooper et al.,2014).