贵州志留系牙形刺生物地层及新属种

doi:10.11743/ogg19810204

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贵州志留系牙形刺生物地层及新属种
ON THE SILURIAN CONODONT BIOSTRATIGRAPHY,NEW GENERA AND SPECIES IN GUIZHOU PROVINCE
1981年2卷第2期页码：123-140
网络首发：1981-06-25，

纸质出版：1981
DOI： 10.11743/ogg19810204
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贵州志留系牙形刺生物地层及新属种[J]. 石油与天然气地质, 1981,2(2):123-140. DOI： 10.11743/ogg19810204.

ON THE SILURIAN CONODONT BIOSTRATIGRAPHY,NEW GENERA AND SPECIES IN GUIZHOU PROVINCE[J]. 1981, 2(2): 123-140. DOI： 10.11743/ogg19810204.

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 Spathognathodus obesus 组合带、第Ⅰ间隔带(A 带)、Spathognathodus parahassi-Spathognathodus guizhouensis 组合带、Spathognathodus celloni 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.Spathognathodus obesus ass.zone;2.Interval I(A zone);3.Spathognathodus parahassi-Sp.guizhouensis ass.zone;4.Spathognathodus celloni 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.