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本文系统研究了甘肃靖远下石炭统榆树梁组和上石炭统靖远组孢子花粉,共计 68属,198种(其中新属1个,新种23个,新联合种1个)。建立了四个孢子带,即榆树梁组 Reticulatisporites carnosus-Savitrisporites nux (CN)带,靖远组下段 Bellispores nitidus-Rota- aspora Knoxi (NK) 带和 Crassispora kosankei-Grumousisporites varioreticulaius (KV) 带,靖远组上段 Reticulatisporites reticulatus-Densosporites triangularis (RT) 带。根据孢子和其它古生物材料,石炭纪内部界线,即下,上石炭统界线置于榆树梁组和靖远组之间 (CN/NK 带之间)。对沉积环境,微古植物群地理区和与西欧,苏联和北美对比进行了深入讨论。
A total of 68 genera and 198 species (including 1 new genera, 23 new species and 1 new species) were systematically studied in Yushuliang Formation of Lower Carboniferous and Jingyuan Formation of Upper Carboniferous in Jingyuan, Gansu Province. Four spore bands were established, ie, the Beltpora nitidus-Rota-aspora Knoxi (NK) band and the Crassispora kosankei-Grumousisporites varioreticulaius (KV) band in the lower section of Jingyuan Formation, Upper Reticulatisporites reticulatus-Densosporites triangularis (RT) band. According to spores and other palaeontological materials, the internal boundary of the Carboniferous, that is, the lower and upper Carboniferous boundary lines are placed between the Yushuliang and Jingyuan formations (between CN / NK bands). An in-depth discussion of sedimentary environment, micro-flora geographical area and comparison with Western Europe, the Soviet Union and North America.