【摘要】 辽东半岛南部的太原组属石炭－二叠系(C－P)过渡层，其海相灰岩发育，类、牙形类等海相化石丰富，是东北南部和华北C－P界线研究较为理想的地区。目前国际上以牙形类化石Streptognathodusisolatus的首现为二叠系的底界，该牙形类化石的首现在我国尚难以确定，而以类Pseudoschwagerina(Sphaeroschwagerina)带的底界作为C－P界线已得到更多研究者的支持。与之相对应，辽东半岛南部太原组中上部类可归结为Sphaewoschwagerina－Rugosofusulina(SR)组合带，可作为C－P界线。更多还原

【Abstract】 ThemarinelimestoneofCarboniferous-PermiansystemsinTaiyuanF.inthesouthofLiaodongpeninsulaisdevelopedwellandcontentsanumberofmarinefossils,suchasFusulinidandConodot.ThesouthofLiaodongpeninsulaisafavourableareaforstudyingtheboundarybetweenCarboniferousandPermiansystemsinthesouthNortheastandNorthChina.InternationallyitiswidelyacceptedthatthestratigraphicpositionwhereStreptognathodusisolatusisfirstdiscoveredshoudbethebottomboundaryofPermiansystem.ButinChina,theplacewheretheConodotfossilisfirstdiscoveredisdifficulttoidentified.MoreandmorepaleotologistsinChinaconsiderthatthebottomboundaryofPseudoschwagerinazoneisusedastheboundarybetweenCarboniferousandPermiansystems.InthesouthofLiaodongpeninsula,Sphaeroschwageina-Rugosofusulina(SR)assemblagezone,whichisconcordantwithPseudoschwagerina,canbeusedastheboundarysignofCarboniferousandPermiansystems.更多还原