Some biostratigraphically important palynomorphs from Paleocene Minato Formation,Iwate Prefecture,Northeast Japan

论文摘要

Palynological study of the Minato Formation, Noda Group, distributed in the vicinity of Kuji City, Iwate Prefecture, Japan is discussed in this paper. Biostratigraphically important palynomorphs including four angiosperm species, Triprojectus subspinulosus（Funkhouser） Braman, Triprojectus cf. spinulosus（Mtchedlishvili） Stanley, Paraalnipollenites confusus Hills et Wallace and Pistillipollenites macgregorii Rouse, and one fungi species, Pesavis tagluensis Elsik et Jansonius are described. Palyno-assembleges from the lower and the middle horizons of the Minato Formation are considered to indicate Danian in age, which corresponds well with the known fission-track dating. Palyno-assembleges from the lower and middle horizons of the Minato Formations are correlative with those from the Wuyun Formation and the Upper Tsagayan Subformation of Heilongjiang（Amur） River area in northeast China and the Russian Far East. Despite the similarity of the palyno-assembleges, differences in the diversity of angiosperms and species composition of some biostratigraphically important species are recognized between the two regions.

论文目录

• 0 Introduction
• 1 Material and methods
• 2 Results
•   Description of Taxa
•     Genus Triprojectus Mtchedlishvili in Samoilovich & Mtchedlishvili 1961
•     Genus Paraalnipollenites Hills et Wallace 1969
•     Genus Pistillipollenites Rouse 1962
•     Genus Pesavis Elsik et Jansonius 1974
•   Correlation of the palyno-assemblages
• 3 Conclusion
• Explanation of Plate
•   Plate I

文章来源

类型: 期刊论文

作者: Junji Horiuchi

来源: Global Geology 2019年04期

年度: 2019

分类: 基础科学

专业: 生物学,地质学

单位: Attached School,Tokyo Gakugei University,Oizumi Campus

分类号: Q911

页码: 258-269

总页数: 12

文件大小: 7917K

下载量: 3