牙形石

The collection for conodont samples of the Ordovician was carried out in the platform facies region of the Tarim Basin. Sixteen outcrop sections were sampled systematically and 29 well drillings were collected at the important intervals. More than 600 samples were acidized, and thousands specimens were obtained.

对塔里木盆地台地相区奥陶系16条露头剖面进行了系统的牙形石样品采集，对29口钻井岩心的重点层段进行了牙形石样品采集，分析了采得的共600余块样品，在奥陶系各个层段都得到数量可观的牙形石。

Through the purification and study of the North China type Permo-Carboniferous biostratigraphic units of Henan Province, 5 fusulinid and 4 conodont biostratigraphic units are collated and stipulated on the basis of the distribution of the fossils in the main section and the Stratigraphic Guide.

通过对河南省华北型石炭纪—二叠纪生物地层单位的清理与研究，根据和牙形石在主干剖面上的纵、横向分布规律，依据地层指南，共厘定出 5个类和 4个牙形石生物地层单位。

Based on the conodont data, the evolutionary sequence of the Ordovician conodonts in the platform facies of the Tarim Basin was cleaned, one assemblage and 7 biozones are revised. After the cleaning, there are 1 assemblage and 20 biozones across the Ordovician in ascending order in the platform facies region of the Tarim Basin.

基于所获得的牙形石系统资料，对塔里木盆地奥陶纪台地相区已建牙形石生物地层序列进行了清理，确定了1个牙形石组合和20个牙形石带，据新的资料对8个原有的生物地层单元作了厘定。

The paleochemical characteristics of paleoseawater from the Permian conodont were reconstructed through contrastive researches of REE and Ce anomalies. The resuts show that geochemical characteristics of the conodont may be regarded as a useful proxy to reconstruct the paleoenvironment.

此外，作者对牙形石的稀土元素组成进行了分析，并且发现牙形石的REE组成和Ce异常与古海水氧化还原条件有一定的相关性，可以指示古海水的信息。

The conodont study indicates that the thick carbonate rock strata belongs to the Majiagou Formation of the Middle Ordovician. The Upper part of the formation has the conodont fossil Erraticodon tangshanensis, the lower part is represented by Tangshanodus tangshanensis.

牙形石研究表明这套厚层质纯的碳酸盐岩地层属于中奥陶统的马家沟组，含有上部以Erraticodon tangshanensis为主，下部以Tangshanodus tangshanensis为特征的牙形石。

In a pelagic chert section at Dachongling of Xiaodong town in the Qinzhou area of southeast Guangxi, we found stratigraphically continuous condont fossils, and divided them into two conodont zones, namely, Jinogondolella granti zone and Clarkina dukouensis zone, in ascending order.

在广西钦州地区小董镇大虫岭深海硅质岩剖面中，首次处理出了层序连续的牙形石化石，并由老至新划分了二个牙形石带，即Jinogondolella granti带和Clarkina ducouensis带。

Among them,the chitinozoan succession in the Fenxiang Formation in West Hubei is the most complete Early Ordovician (Late Tremadocian to Early Arenigian) chitinozoan succession which have been not ever found in the world so far. The result on the precise subdivisions and corelations of the chitinozoan and graptolite and conodont biozone of Dawan Formation at Huanghuachang strongly supports the Huanghuachang section as the Global Stratotype Section and Point for the base of Middle Ordovician.

其中，有关在鄂西地区分乡页岩中所发现的连续保存的几丁虫序列是目前世界上早奥陶世晚特里马道克世-早阿伦尼克世最完整的几丁虫序列；宜昌黄花场奥陶系大湾组几丁虫、笔石和牙形石精细生物地层划分和对比的研究成果，为宜昌黄花场剖面最终竞争成为全球中奥陶统底界界线层型剖面和点奠定了坚实的基础。

The strata between the carbonate rocks of the Chaguoluoma Formation (Devonian-Early Carboniferous) and carbonate rocks of the Xiala Formation consist mainly of clastic rocks with limestone, which are marked by glaciomarine deposits in terms of sedimentation and mixing of Gondwanan and Tethyan faunas in terms of fossils.

古生物群混生的现象为石炭纪—二叠纪的特提斯生物区与冈瓦纳生物区之间的地层和古生物对比建立了一座桥梁。永珠组中上部地层中同时产有牙形石和腕足类，牙形石的研究表明其时代为晚石炭世莫斯科期，而腕足类的研究则表明其为早二叠世萨克马尔期。

In this paper, a detailed comparison is made between the four phases in the Tarim Basin and the corresponding faunas in South China and North China.

对这4个阶段的牙形石动物群和华北、华南同期牙形石动物群进行了详细的对比。

The discovery of conodonts has preliminarily realized the comparison between the two main fossils of the Qianyannian-conodont and ammonites.

牙形石的发现还初步实现了青岩阶2大主导门类化石——牙形石和菊石在同一剖面的直接对比关系。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。