四川新龙晚三叠世植物

植物研究 ›› 1985, Vol. 5 ›› Issue (2): 21-47.

四川新龙晚三叠世植物

陈晔¹, 陈明洪¹, 孔昭宸¹, 杨贤河²

1. 中国科学院植物研究所, 北京;
2. 成都地质矿产研究所北京, 四川, 成都

出版日期:1985-06-15 发布日期:2016-06-13

LATE TRIASSIC PLANTS FROM XINLONG, SICHUAN PROVINCE

Chen Ye¹, Chen Ming-hong¹, Kong Zhao-chen¹, Yang Xian-he²

1. Institute of Botany, Academia Sinica, Beijing;
2. Chengdu Institute of Geology and MineralResources, Chengdu, Sichuan

Online:1985-06-15 Published:2016-06-13

摘要/Abstract

摘要： 本文报道四川省新龙地区晚三叠世植物(包括英珠娘阿组及喇嘛垭组)29属48种。在这植物群中,真蕨植物占优势(8属15种),其中又以扇蕨科,合囊蕨科和紫萁科植物占显要地位,苏铁类植物次之,银杏类和松柏类植物比较丰富,种子蕨类植物出现了叉羽叶和鳞羊齿等。其组合特征与云南一平浪组、四川须家河组植物群,湘赣地区,箐河以及藏东地区晚三叠世中晚期植物群极为相似。与日本成羽,越南东京和东格陵兰等地晚三叠世植物群也比较接近,所属地质时代大致相当,应属于三叠世考依卜中——晚期。指示的气候属热带——亚热带。

Abstract: The present paper deals with fossil plants belonging to 28 genera and 48 species. Fossils were collected from Yingzhuni-anga Formation and Lamaya Formation in Xinlong District, Sichuan province. In this flora the dominant group is Filicopsida (8 genera and 15 species).Of which members of Dipteridaceae, Marattiaceae and Osmundaceae are abundent. Cycadophyta consists of 6 genera and 11 species. Ginkgoales and Coniferales are rich, Pteridospermae consists of Ptilozamites, Lepidopteris and Ctenozamites (1 speciesper genus). The characters of this flora closely resembles Yipinglang flora of Yunnan, Late Triassic flora of Hunan and Jiangxi, Xujiahe and Qinghe of Sichuan, Eastern Xizang, Tonkin flora of Vietnam, Nariwa flora of Japan and East Greenland flora etc. but this flora is younger than the Daqiaodi flora found in Baoding. The age of the flora is assigned to middle Keuper-Rhaetic stage of late Triassic, The climatic of Xinlong District in that time was tropical-subtropical.

陈晔, 陈明洪, 孔昭宸, 杨贤河. 四川新龙晚三叠世植物[J]. 植物研究, 1985, 5(2): 21-47.

Chen Ye, Chen Ming-hong, Kong Zhao-chen, Yang Xian-he. LATE TRIASSIC PLANTS FROM XINLONG, SICHUAN PROVINCE[J]. Bulletin of Botanical Research, 1985, 5(2): 21-47.