An ordovician fauna from Lough Shee,Partry Mountains,Co. Mayo,Ireland     

D. A. T. Harper  J. R. Graham  A. W. Owen  S. K. Donovan 《Geological Journal》1988,23(4):293-310

An hitherto undocumented early Ordovician fauna from mudrocks at Lough Shee in the Partry Mountains contains species of sponge, machaeridian, bivalve, gastropod, cephalopod, brachiopod, and trilobite, together consistent with a deep-water setting marginal to the North American province. The trilobite and brachiopod data suggest a correlation of the Lough Shee mudrocks with the upper Whiterock Stage (equivalent to a level near the D. ‘bifidus’ – D. murchisoni boundary, within the middle Llanvirn). The sparse, low-diversity assemblage is specialized and demonstrates the development of aspects of the Whiterock fauna in the South Mayo Trough.  相似文献   

A preliminary study on the diversity of fish species and marine fish faunas of the South China Sea     

Caihua Ma  Kui You  Meizhao Zhang  Fengqi Li  Dagang Chen 《中国海洋大学学报(英文版)》2008,7(2):210-214

There are 3048 species offish occurring in the China Seas (CS), of which at least 2321 species are found in the South China Sea (SCS), belonging to 35 orders, 236 families and 822 genera. The fish species diversity is analyzed in this paper based on biogeography, biostatisties, fishing methods, etc. It is found that the regional environment, especially biological factors, plays an important role in the distribution of faunas, and there are two fish faunas in the SCS, one in the north and another in the center and south. This regional division is of value for sustainable fishery production and efficient management of fishery resources.  相似文献   

皖南上溪群中放射虫化石和古蛋类化石的发现及其古地理意义          下载免费PDF全文

陈冠宝  李红生  徐树桐  刘贻灿  胡远超  周栗 《古地理学报》2007,9(6):589-596

皖南上溪群出露于“江南古陆”东北部,自下而上分为樟前组、板桥组、木坑组/环沙组和牛屋组,前人根据其中岩体的同位素年龄推定其时代为中元古代。在 20世纪 80年代后期开展的江南古陆是古陆还是造山带的大讨论中,上溪群的时代问题成了一个关键问题,而且也是了解造山带形成时代的关键问题。作者新近在皖南歙县附近的上溪群中发现了早古生代的放射虫化石和古蛋类化石。这是一个新的重要发现,它证明宿主地层上溪群,或至少其中的牛屋组,应是早寒武世沉积,其古地理环境应是古海洋,而不是古陆。其隆起和变质作用则更晚。该发现对于在研究区乃至整个华南地区的古地理学研究和能源矿产（特别是石油和天然气）的预测和勘探都是有重要意义的。  相似文献