河北赤城古子房蓟县系雾迷山组燧石相微古植物新资料  

Microfossils from the Wumishan Formation in Chicheng County, Hebei, China

作　　者：李培菊[1] 罗其玲 

机构地区：[1]河北地质学院,地矿部天津地矿所

出　　处：《河北地质学院学报》1994年第3期213-227,共15页

摘　　要：本文记述了赤城县古子房剖面雾迷山组（约１２～１４亿年）石条带和叠层状石夹层中所含微古植物，共计１３个属，１６个种，２个相似种，５个未定种，其中包括２个新种。计有丝状蓝藻９种，蓝球藻５种，皮果藻１种，团藻１种，以及分类位置未定的Ｘｅｎｏｔｈｒｉｘｖｕｎｅｒａｔａｓｐ．ｎｏｖ、Ｘ．ｃｏｎｉｃａｓｐ．ｎｏｖ和Ａｒｃｈａｅｏｌｌｉｐｓｏｉｄｅｓｇｒａｎｄｉｓ上述化石组合与北京十三陵，北京西山和天津蓟县雾迷山组以及加拿大西北部迪斯马尔湖群（约１３亿年）所合化石一致。同时也填补了该区蓟县采石相微化石的空白。Moderately well preserved mierofossils arc reported in brown chert bands andbrown stromatolitie chert of the Wumishan Formation (Ca. 1200-1400Ma) in theGuzifang section of Chieheng county. 13 genera, 16 species. 2 or. species, 5 indeterminate species from of filamentous coccoid and irregular taxa are identified of which 2 speciesare newly erected:Oscillatoriaceae: Cyanonema sp., Oscillatoriopesis luozhuangesis Py. Zhang, O.robusta Horodyski & Honaldson O. vulnerata Py, Zhang, O. of. connectens Py. Zhang,Obconicoghycus amadeus Schopf & Blacic, O. sp., Saccolyngbya tynguis By. Zhang,Palaeolyngbya of. hebeiensis Py. Zhang., Palaeolyngbya sp., Chroococcaceae:Bigeminococcus mucidus Schopf & Blacic, Myxococcoides maps Py. Zhang, M.muricate Schopf & Barghoorn, M. grandis Horodyski & Donaldson, Globorkycusrugosum Schopf, Dermocaroaccae: Clonoghycus vulgaris Oehler. Volvocaceae:Pandorinopeis ixianensis Py. Zhang. Micro-Organism incertae sedisf Xenolhrisvunerata sp. nov, X. conica sp. nov, Arehaeoellipsoides grandis Horodyski & Honaldson.The present assemblage is generally similar to that described from the WumishanFormation, the ining tombs and western Hills of Beijing, Jixian of Tianyn, NorthChina and Dismal lakes Grop(ea.. 1300Ma) in northwestern Canada.The descriptions or the new species arc briefly given below:Xenothrix vulnerata sp novPlate 2 figs.2-4Irregularly dumbbell-shaped or irregularly calabash-shaped empty envelopes,solitary 40-180um long and 15-40um wide;wall single layer,surface granular.Type specimen V111-26-1-2Xenothrix conica sp novPlate 1 fig.8Shortly conical-empty envelopes,solitary,20-67um long and 8-25um wide,single yeared,sarface smooth or granular.Type specimen 1-7-2-4-5

关 键 词：微体古植物 藻类 燧石相 雾迷山组 

分 类 号：Q911.6[天文地球—古生物学与地层学]