【摘要】 <正> 前言本文研究的材料,系笔者采自南京钟山中三叠统,剖面是黄马青组的标准地点。自1928年谢家荣创名“黄马青页岩”以来,曾先后使用过“黄马青系”、“黄马青群”、“黄马青组”等名称,但其含义各不相同。本文所称黄马青组,是指吴其切等(1980)《南京附近黄马青群的进一步划分和地质时代的研究》一文中图6剖面的更多还原

【Abstract】 The fossil charophytes described in this paper were collected by the writer from the Huangmaqing Formation in Zhongshan of Nanjing, and they are here referred to 15 species (including 9 new species) and 4 genera, namely Stellatochara sellingii Horn af Rantzien, S. hoellvicensis Horn af Rantzien, S. maedlari Horn af Rantzien. S. maedleriformis Saidakovsky, S. badongensis Lu, S. longipiriformis (sp. nov.), S. bicuspidata (sp. nov.), S. zhongshanensis (sp. nov.), Stenochara ovata (Saidakovsky) Saidakovsky. S. paraovata (sp. nov.), Porosphaera subglobosa (sp. nov.), Porochara oviformis (sp. nov.), P. nanjingensis (sp. nov.), P. subquadrata (sp. nov.) and P.oliviformis (sp. nov.). Among these elements, S. sellingii was found from the. Middle Triassic of South Sweden and Badong Formation of Hubei, China; S. hoellvicensis from South Sweden and Grermany, the Ermaying group of Shaanxi and the Liaocheng Formation of Shandong; S. maedleri from Sweden and Russia; S. maedleriformis from Russia and the Badong Formation of Hubei, China; and S. badongevsis also from Badong Formation of Hubei, China. All of these fossil-bearing horizons belong to the Middle Triassic, and therefore the Huangmaqing Formation should be assigned to the Middle Triassic in age.更多还原