西南日本秋吉带石炭系高山(Ko-yama)灰岩群的石炭纪(Visean–Moscovian)牙形石序列

TheCarboniferousconodontfaunalsuccessionofthelowerpartofKo-yamaLimestoneGroupwasstudied.TheconfirmedupperVisean–lowerMoscovianlithostratigraphyofthegroupischaracterizedbytheclasticcarbonateswithcommonassociationofthebasalticpyroclasticsandsomeintercalationofspicularchertbeds.ThefaunalsuccessionofGnathodussemiglaber(upperVisean),Gnathoduspraebilineatus–Lochrieamultinodosa(upperVisean),Lochrieaziegleri–Gnathodusgirtyigirtyis.l.(lowerSerpukhovian),Neoganthodussymmetricus–Idiognathodusprimulus(middle–upperBashkirian),andIdiognathoidesconvexus–Gondolellaclarki(lowerMoscovian)faunas,appearsinconcordancewiththelithostratigraphicorder.ThefaunasarecorrelativewiththosefromtheconodontzonesoftheHina,Atetsu,AkiyoshiandOmilimestonegroupsintheAkiyoshiBelt.TheVisean/SerpukhovianboundaryofthesectionwasrecognizedbytheFADofLochrieaziegleri.