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本文描述了河南西部潭头、灵宝盆地古新统一始新统中被子植物花粉的三个新形态属及十一个新种。新属是:潭头粉属(Tantoupollis)、大孔粉属(Megaporopollis)和灵宝粉属(Lingbaopollis)。新种是:刺纹潭头粉(Tantoupollis echinatus)、小瘤潭头粉(Tantou- pollis microverrucosus)、内粒潭头粉(Tantoupollis endogranulatus)、突起潭头粉(Tan- toupollis prominens)、雅致大孔粉(Megaporopollis elegans)、齿状大孔粉(Megaporo- pollis serratus)、粗粒灵宝粉(Lingbaopollis crassigranulatus)、小灵宝粉(Lingbaopol- lis minor)、河南江汉粉(Jianghan pollis henanensis)、栾川江汉粉(Jianghan pollis luanchuanensis)及显著山龙眼粉(Proteacibites notabilis)。这些新属种,形态特征明显, 演化速度较快,地质时代分布有一定局限性,因此,对古新世—早始新世地层的划分和对比有一定意义。潭头盆地、灵宝盆地位于河南西部,均系白垩—第三系小型断陷盆地,在元古界的基底上广泛沉积了一套较厚的下第三系。童永生等(1980)将潭头盆地下第三系自下而上分为古新统高峪沟组、大章组,始新统潭头组[2];张仁杰等(1974)将该区下第三系命名为潭头群,自下而上分为潭一、潭二、潭三、潭四组。灵宝盆地下第三系自下而上分为项城群 (古新统一中始新统)、川口组(中、上始新统)、浑水河组(上始新统)。本文所描述的新属种产自潭头盆地大章组(潭二组)及灵宝盆地项城群第四段中。
This paper describes three new morphological and eleven new species of pollen from angiosperm in the Paleocene Eocene in the Tantou and Lingbao basins in western Henan Province. The new genera are: Tantoupollis, Megaporopollis and Lingbaopollis. The new species are: Tantoupollis echinatus, Tantou- pollis microverrucosus, Tantoupollis endogranulatus, Tan-toupollis prominens, Megaporopolis elegans, Megaporopollus pollen serratus, Lingba polylis crassigranulatus, Lingba po lisn minor, Jianghan pollis henanensis, Jianghan pollis luanchuanensis and Proteacibites notabilis. These new species have obvious morphological features, rapid evolution and some limitations in geologic times distribution. Therefore, it is of certain significance to divide and contrast the Paleocene-Early Eocene strata. The Tantou Basin and the Lingbao Basin, located in the western part of Henan Province, all belong to the Cretaceous-Tertiary mini-faulted basin. A thicker Lower Tertiary system has been widely deposited on the basement of the Proterozoic. Tong Yongsheng et al. (1980) classified the Lower Tertiary in the Tantou Basin into the Upper Paleo-Upper Guyuang Formation, the Dazhang Formation and the Eocene Tantou Formation [2]; Zhang Renjie et al. (1974) Under the Tertiary named tantou group, bottom-up into the lake, lake two, three lake, lake four groups. The Lower Triassic of the Lingbao Basin is divided into Xiangcheng Group (Paleolithic Middle Eocene), Chuankou Formation (Middle and Upper Eocene) and Hunshuihe Formation (Eocene) from bottom to top. The new genera described in this paper were produced in Dazhang Formation (Tan 2 Formation) of Tantou Basin and the fourth member of Xiangcheng Group in Lingbao Basin.