摘要
1986年辽宁省地矿局区调队在大连市棋盘磨和杨家屯震旦系兴民村组发现水母类化石。本人进行了较详细的研究,根据其结构和生态特征,确定为腔肠动物门水螅虫纲水母化石,并命名为大连水母动物群。文中对其中的2个新属,7个新种进行了描述,它们为:Cyclomedusa qipanmoensis sp.nov.,Cyclomedusa stellatus sp.nov.,Medusinites monoseamoformis sp.nov.,Medusinites planodiscifo-rmis sp.nov.,Ellipsomedusa liaonanensis gen.et sp.nov.,Ellipsome-dusa dalianensis gen.sp.nov.,Quadratimedusa liaoningensis gen.etsp.nov.这一发现和研究无疑确定了大连地区震旦系的存在。
In 1986,the medusoid fossis were found in Xingmincun formation,Sinian system in Qipanmo and Yangjiatun village, Dalian city, southern Liaoning province by the Regional Geological Survey of Liaoning province and studied by writer.According to the characteristics of the structure and the ecology, the fossil is regarded as Hydroid medusa of the Coelenterata. The medusoid fossils constitute a fauna of Dalian, tow now genera and seven species are described here, including Cyclomedusa qipanmoensis sp. nov., Cyclomedusa stellatus sp. nov. ,Medusinites monoseamoformis sp. nov. ,Medusinites piano-disformis sp. nov. ,Ellipsomedusa liaonanensis gen et sp. nov. ,Ellipsomedusa dalianensis gen. et sp. nov., Quadratimedusa liaoningensis gen. et sp. nov. This finding makes it sure that the Sinian stratum do exist in the area of Dalian.
关键词
震旦纪
水母
大连市
古动物
hydroi-d medusa, sinian system, dalian area
