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《Acta Petrolei Sinica》 1982-04
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PRELIMINARY STUDIES AND CORRELATIONS ON ORDOVICIAN CONODONTS FROM THE NINGZHEN MOUNTAINS, NANJING, CHINA

An Taixiang (Beijing Universete) Ding Liansheng (Petroleum Exploration Brigade, Jiangsu)  
This paper deals with three stratigraphical sections bearing Ordovician conodonts, which is exposed at Tangshan Mt., Mufushan Mt. and Lunshan Mt. in the vicinity of Nanjing, China. It has been were than 100 years since the Ordovician strata sediment was discovered in Nanjing, but detailed stratigraphic----Palaeontological studies began only in the 1950's. From a careful study on Ordovician conodonts obtained, in 1977-1979, the authors are able to establish some is conodont zones in the Ordovician, from lower, upwards. Tangtou Formation Icriodella baotaensis-Zone Pagpda Formation Hamarodus europaeus-Zone Tatianba Formation polyplacognathus jianyeensis-Zone Guniutan Formation Eoplacognathus foliaceus-Zone E, pseudoplanus-Zone Amorphognathus antivaiabilis-Zone Dawan Formation Baltoniodus novis-Zone Paroistodus orginalis-Zone Oistodus aff mulficorrugatus-Periodon flabellum-Zone Oepikodus evae-Zone Hunghuayuan Formation Serratognathus diversus-Zone Lunshan Formation Scolopodus barbalus-Zone S. quadrdplicatus-Zone Acothodus costadus-"Acodus" oneotensis-Zone Monocoslodus sevierensis-Zone The Ordovician Conodom zones in the Ningzhen Mts. can be correlated with those of the Yichang regian as given in table I. The conodont faunas include about species representing more than 46 genera of which, 3--species are new and described here
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