古杯动物化石的研究现状  

OVERVIEW OF RESEARCH ON THE ARCHAEOCYATHS

作　　者：杨爱华[1] 袁克兴[2] 

机构地区：[1]南京大学地球科学与工程学院,南京210093 [2]中国科学院南京地质古生物研究所,南京210008

出　　处：《古生物学报》2012年第2期222-237,共16页Acta Palaeontologica Sinica

基　　金：国家自然科学基金项目(40702002;40725005;40725005;40372020);科技部项目(2006CB806401;2006FY120300)资助课题

摘　　要：古杯动物分布广,种类多,演化快,是国际寒武系地层划分对比的标志性化石,对其研究具有重要意义。本文总结古杯动物化石的研究历史、目前存在的问题和分类现状,评述Debrenne等的古杯动物化石新分类方案,并指出其与旧分类方案的差异及所存在的问题,认为随着古杯动物的系统发育和个体发育深入研究,及新的研究方法和分支系统学应用,新方案有待进一步的检验和修正。评述研究古杯动物化石地层学意义,认为Atdabanian阶底部、Botoman阶底部和Toyonian阶中部的古杯化石组合能够应用在寒武纪早期洲际间地层对比上。文章还阐述中国古杯动物在系统分类学、生物地层学与其古地理分布等方面的研究现状,并分析了中国古杯动物研究中存在的问题。Archaeocyatha （Porifera） were an important group of marine sessile organisms during the Cambrian, they evolved rapidly and were globally distributed during the Early Cambrian. They are therefore important for biostratigraphic correlation over large areas, nationally and internationally. In this paper we review and discuss developments in classification and ideas of relationships in the Class Archaeocyatha, particularly the work of Debrenne et al. （2002）. We highlight the need for a eladistie approach in attempting to further clarify changing ideas about phylogenetic relationships. In terms of biostratigraphy and palaeogeography, the archaeocyaths of the Atdabanian, Botoman, and Toyonian Stages are particularly useful for Early Cambrian stratigraphic correlation and palaeobiogeographic analysis. We summarize the history and current status of research on archeocyathan systematic, biostratigraphic, and palaeogeographic distribution within China, as well as internationally, and identify important loci of interest for further workmost notably that they formed an important component of the Lower Cambrian carbonate fauna of the Yangtze Platform.

关 键 词：古杯动物化石 研究 现状 寒武纪早期 

分 类 号：Q915[天文地球—古生物学与地层学]