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贵州志留系牙形刺生物地层及新属种
石油与天然气地质
1981年 2卷 第No.2期
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Title
ON THE SILURIAN CONODONT BIOSTRATIGRAPHY,NEW GENERA AND SPECIES IN GUIZHOU PROVINCE
Authors
Zhou Xiyun
Zhai Zhiqiang
Xian Siyuan
摘要
本文首次对贵州志留系牙形刺进行了研究,3500粒标本分属于42个属93个种.自下而上建立了 组合带、第Ⅰ间隔带(A 带)、- 组合带、 组合带和第Ⅱ间隔带(B 带)等序列.根据与欧美同期牙形刺对比,认为前四个带属早志留世,B 带属中志留世早期。描述了新属7个,新种35个.
Abstract
This paper deals with the conodonts collected from the Lower-Middle Silu-rian in Guizhou Province,a total of 93 species in 42 different genera havebeen established here,in which 35 new species and 7 new genera aredescribed.The stratigraphical distribution of conodonts allows the recognition of5 assemblage and interval zones in ascending order(See Table 2):1. ass.zone;2.Interval I(A zone);3.-Sp. ass.zone;4. ass.zone and 5.Interval Ⅱ(B zone).On the basis of characteristic of the Conodont fauna and correlation withconodont sequences of Europe and North America(See Table 3),the Spa-thognathodus obesus ass.zone—Sp.celloni ass.zone are Early Silurian in ageand Interval Ⅱ zone is Middle Silurian.
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