The 'Falang Formation' of western Guizhou was previously called the 'Halobia Bed' and considered to be I .adinian in age. It was subdivided upward into the Zhuganpo, Laishike and Longchang members base...The 'Falang Formation' of western Guizhou was previously called the 'Halobia Bed' and considered to be I .adinian in age. It was subdivided upward into the Zhuganpo, Laishike and Longchang members based on ammonites and the Trachyceras multitubertulatum Zone of the Longchang Member was put in the Lower Carnian. Here in the present paper, 4 genera and 9 species of ammonites and 1 nautiloid genus and species collected from the upper part of the 'Falang Formation' (i.e. the Wayao Formation used in this paper, equivalent to the Laishike Member from Guanling and Zhenfeng counties are described. The geological and geographical distribution of these cephalopods, as well as the co-existing conodonts, put the Wayao Formation to the late early Carnmian.展开更多
本文描述了采自贵州省六枝县郎岱剖面“法郎组”的一些牙形石。该牙形石群主要由Paragondolella polygnathiformis, P. maantangensis, P. tadpole, P. navicula navicula, P. foliata foliata, P. foliatainclinata, P. jiangyouensis,...本文描述了采自贵州省六枝县郎岱剖面“法郎组”的一些牙形石。该牙形石群主要由Paragondolella polygnathiformis, P. maantangensis, P. tadpole, P. navicula navicula, P. foliata foliata, P. foliatainclinata, P. jiangyouensis, P. langdaiensis Yang sp. nov.等组成,自下而上可识别出3个牙形石带:竹杆坡组Paragondolella polygnathiformis-Paragondolella maantangensis组合带、Paragondolella polygnathiformis-Paragondolella tad pole组合带、瓦窑组Paragondolella polygnathiformis带。因此,该剖面“法郎组”的时代,不仅上部(当前的瓦窑组),而且下部(当前的竹杆坡组),都是晚三叠世卡尼期的。展开更多
文摘The 'Falang Formation' of western Guizhou was previously called the 'Halobia Bed' and considered to be I .adinian in age. It was subdivided upward into the Zhuganpo, Laishike and Longchang members based on ammonites and the Trachyceras multitubertulatum Zone of the Longchang Member was put in the Lower Carnian. Here in the present paper, 4 genera and 9 species of ammonites and 1 nautiloid genus and species collected from the upper part of the 'Falang Formation' (i.e. the Wayao Formation used in this paper, equivalent to the Laishike Member from Guanling and Zhenfeng counties are described. The geological and geographical distribution of these cephalopods, as well as the co-existing conodonts, put the Wayao Formation to the late early Carnmian.
文摘本文描述了采自贵州省六枝县郎岱剖面“法郎组”的一些牙形石。该牙形石群主要由Paragondolella polygnathiformis, P. maantangensis, P. tadpole, P. navicula navicula, P. foliata foliata, P. foliatainclinata, P. jiangyouensis, P. langdaiensis Yang sp. nov.等组成,自下而上可识别出3个牙形石带:竹杆坡组Paragondolella polygnathiformis-Paragondolella maantangensis组合带、Paragondolella polygnathiformis-Paragondolella tad pole组合带、瓦窑组Paragondolella polygnathiformis带。因此,该剖面“法郎组”的时代,不仅上部(当前的瓦窑组),而且下部(当前的竹杆坡组),都是晚三叠世卡尼期的。
