欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
详细讨论滇东北奥陶纪的岩石地层和动物群特征,初步建立区内的三叶虫地层序列,据此可靠确定各有关岩组的时代。该地区除普遍缺失早奥陶世早期的沉积外,依次发育了红花园组（特马豆克末期—弗洛初期）,湄潭组（弗洛期—达瑞威尔初期）,风洞岗组（达瑞威尔早—晚期）,十字铺组（达瑞威尔末期—桑比早期）、宝塔组（桑比晚期—凯迪早期）,盐津组（晚凯迪早期）、五峰组（晚凯迪晚期）及观音桥组（赫南特期）,岩相与黔北的相应岩组可作大致对比,而三叶虫动物群的组成和序列则大体与当时同属扬子陆块西部边缘的沉积区包括滇东、滇东南、黔北、川中、重庆、陕南及安徽和县等地区相似。共记述本区奥陶纪三叶虫计19属27种,分属14科。并对其中的一个新种Hungioides yanjinensis sp.nov.以及两个未命名的新种Abulbaspis sp.nov.和Plaesiacomiasp.nov.作系统描述。Abulbaspis过去仅报道于华北和哈萨克斯坦地区的达瑞威尔阶,而在本地区则产于桑比阶上部—凯迪阶下部;Plaesiacomia广泛分布于达瑞威尔阶—桑比阶西泛冈瓦纳地区,在滇东北的发现不但将该属的分布区域扩大到了东泛冈瓦纳地区,而且因其产出于大坪中期的层段,表明该属可能起源于东泛冈瓦纳,尔后才向西迁移的;这两属在扬子区的首次发现,对于进一步研究奥陶纪不同区块间的三叶虫动物群的扩散和交流具有重要意义。
英文摘要：
Summary The Ordovician faunal associtions of lithological characters and northeastern Yunnan （Text- fig. 1） are reviewed. On the basis of previous records and new material, the trilobite succession established herein affords reliable evidence for the age determination of each of stratigraphic units. the Hunghuayuan Formation （latest Tremadocianearliest Floian）,
同期刊论文项目
同项目期刊论文
Floian (Early Ordovician) conodont-based biostratigraphy and biogeography of the Australasian Superp
On the integration of Ordovician conodont and graptolite biostratigraphy: new examples from Gansu an
Early Ordovician conodonts from Zhejiang Province, southeast China and their biostratigraphic and pa
Conulariids and Sphenothallus (Cnidaria, Medusozoa) from the Tonggao Formation (Lower Ordovician, Ch
Biostratigraphic correlation of the Ordovician black shales in Tarim Basin and its peripheral region
An Early-Middle Ordovician acritarch and prasinophyte assemblage from Houping, Chongqing city, South
Comments on the proposed conservation of the specific name of Anathyris monstrum Khalfin, 1933 (curr
Early Ordovician lithistid sponge-Calathium reefs on the Yangtze Platform and their paleoceanographi
Geobiodiversity Database (GBDB) in stratigraphic, palaeontological and palaeogeographic research &am
A new species of aneurophyton (progymnospermopsida) from the middle devonian of west junggar, xinjia
Discovery of the late Middle Ordovician Saucrorthis fauna (Brachiopoda) from the Sibumasu palaeoplat
Quantitative stratigraphy of the Wufeng and Lungmachi black shales and graptolite evolution during a
Paleoecological associations of middle Llandovery (Silurian) corals from Huaying Mountain, eastern S
A new early Silurian brachiopod genus, Thulatrypa, from Norway and South China, and its palaeobiogeo
Temporal and spatial distribution of the Wufeng Formation black shales (Upper Ordovician) in South C
Conodont diversification during the Ordovician: A perspective from North China and Tarim (northweste
Early–Middle Ordovician conodont biofacies on the Yangtze Platform margin, South China: Applications
Darriwilian Saucrorthis fauna: Implications for the great Ordovician biodiversification event (GOBE)
An Early–Middle Ordovician acritarch and prasinophyte assemblage from the Meitan Formation in Qijian
Pigmentation of the Early Silurian marine red beds in South China as exemplified by the Rongxi Forma
A new species of middle Rhuddanian Halysites (Tabulata) from Meitan, northern Guizhou, Southwest Chi
Allogenic succession in Late Ordovician reefs from southeast China: a response to the Cathaysian oro
The oldest known bryozoan: Prophyllodictya (Cryptostomata) from the lower Tremadocian (Lower Ordovic
Global reef recovery after the end-Ordovician extinction: evidence from late Aeronian coral-stromato
Chapter 11: Biodiversity, biogeography and phylogergraphy of Ordovician rhynchonelliform brachiopods
Meganodular limestone of the Pagoda Formation: A time-specific carbonatefacies in the Upper Ordovici
Cladistic analysis of the ‘trepostome’ Suborder Esthonioporina and the systematics of Palaeozoic bry
期刊信息
位置：