J Integr Plant Biol. ›› 1985, Vol. 27 ›› Issue (3): -.

• Research Articles •    

A Preliminary Study of Late Triassic Plants from Qinghe of Yanbian District, Sichuan Province

Chen Ye, Duau Shu-ying and Zhang Yu-cheng   

Abstract: This paper deals with fossil plants 144 species belong to 46 genera col- lected from Qinghe of Yanbian District, Siehuan Provinee. In this paper 5 new species are described, i.e.: Marattia sichuanensis, Drepanozamites multipartitus, Podozamites sichuanensis, Pityostrobus yanbianensis and Scoresbya entegra. The dominant group of the Qinghe flora is Cycadophyta (9 genera and 38 species) Filicopsida is also a large group (12 genera and 32 species) in this flora, of which Dipteridaceae, Angiopteridaceae, Marattiaceae and Osmundaceae are rieher in species than others. Pteridospermae is fairly numerous in this flora. Ginkgoales and Coniferales are very rich. The dominance of Podozamites forms the most conspicuous feature of this flora. Based on the characters of this flora, it closely resembles Yipinglang flora of Yunnan, Xujiahe flora of Sichuan, Tonkin flora of Vietnam, Nariwa flora of Japan and East Greenland flora, but is younger than the Daqiaodi flora found in Baoding of Si- chuan. The age of the flora is assigned to the middle Keuper-Rhaetic stage of the late Triassic. The climate of that time was tropic-subtropic in nature.

Key words: Marattia, Drepanozamites, Podozamites, Pityostrobus, Scoresbya.

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