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A new species of the primitive stromatoporoid Cystostroma from the Ordovician of East Asia
전주완,Qijian Li,오재룡,조석주,이동진 한국지질과학협의회 2019 Geosciences Journal Vol.23 No.4
A new species of the most primitive rosenellid stromatoporoid Cystostroma, C. primordia sp. nov. is reported from the Hunghuayuan Formation (Lower Ordovician, Floian) of Guizhou Province in the South China Block and the Duwibong Formation (Middle Ordovician, Darriwilian) of the Taebaeksan Basin in mid-eastern Korea (North China Block). This species is the first representative of the genus found in both the North and South China blocks. Cystostroma primordia sp. nov. is characterized by the absence of denticles and distinctively smaller cyst plates (height 0.04–0.20 mm, length 0.09–0.39 mm) than any other known species of Cystostroma. The presence of C. primordia sp. nov. in Lower to Middle Ordovician strata of western Gondwana challenges the long-held view of the late Middle Ordovician emergence of Paleozoic stromatoporoids. The simple internal morphological features of this new species and its occurrence in the Lower Ordovician of South China strongly indicate that an Early Ordovician Cystostroma-type precursor from western Gondwana is located near the base of the stromatoporoid stock. This occurrence greatly preceded the late Middle Ordovician (late Darriwilian) stromatoporoid diversification in circum-equatorial regions worldwide.
이동진 광운대학교 인문사회과학연구소 2001 인문사회과학논문집 Vol.30 No.-
The internet advertising was begun in March, 1997 in China. The first one was Intels banner advertising on Chinabyte.com. On the base of the great scale of population and high growth of China economic, more and more internet advertising has been used. Now it is the important mass media which different from four big media. In this study the author proposed the future direction of internet advertising development in China under analysis of present conditions and problem with. First, internet advertising in China will maintain great development with the growth of internet user. High growth of Chinese economic will support its capability also. Second, foreign advertiser will also play leading role in internet advertising market in China, as they are the main advertisers and they hold the knowhow. With the China join WTO, more and more foreign advertising company who have great funds and skill will enter internet advertising market in China. If they want make success they must to understand the Chinese netizens property, because the mouse are in the Chinese netizens hands who expose to the advertisement.