학술논문
黔西滇东早三叠世卡以头组石松类大孢子的地质意义 / Geological significance of the lycopod megaspores from the early triassic Kayitou Formation of the Western Guizhou and Eastern Yunnan Region
Document Type
Academic Journal
Author
Source
兰州大学学报（自然科学版） / Journal of Lanzhou University (Natural Sciences). (2):168-179
Subject
Language
Chinese
ISSN
0455-2059
Abstract
在黔西滇东地区海陆过渡相密德剖面早三叠世卡以头组发现了大量的大孢子印痕化石，通过光学显微镜和扫描电子显微镜的观察，对大孢子的形态进行了初步的研究，共分为9属16种(包括未定种)，其中最丰富的是Trileites ，其次为Maexisporites ， Triangulatisporites ， Horstisporites ， Aneuletes ，其余仅个别。这一研究丰富了该地区的生物化石种类和植物面貌，进一步验证了卡以头组的时代为早三叠世早期。
Abundant dispersed megaspore impression fossils were described from the Kayitou formation of the Mide Section of the marine-terrestrial transitional facies for the first time in the western Guizhou and eastern Yunnan Region. Sixteen species of nine genera were recognized under light-microscope and SEM. Trileites dominates this megaspore assemblage, while Maexisporites, Triangulatisporites, Horstisporites and Aneuletes are in a subordinate position, and the others are occasionally seen. New biostratigraphical evidence was obtained on the early triassic age of the Kayitou formation and the missing parts of lycopods species filled.
Abundant dispersed megaspore impression fossils were described from the Kayitou formation of the Mide Section of the marine-terrestrial transitional facies for the first time in the western Guizhou and eastern Yunnan Region. Sixteen species of nine genera were recognized under light-microscope and SEM. Trileites dominates this megaspore assemblage, while Maexisporites, Triangulatisporites, Horstisporites and Aneuletes are in a subordinate position, and the others are occasionally seen. New biostratigraphical evidence was obtained on the early triassic age of the Kayitou formation and the missing parts of lycopods species filled.