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首页> 外文期刊>Grana: An International Journal of Palynology and Aerobiology >Combined LM and SEM study of the Middle Miocene (Sarmatian) palynoflora from the Lavanttal Basin, Austria: Part I. Bryophyta, Lycopodiophyta, Pteridophyta, Ginkgophyta, and Gnetophyta
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Combined LM and SEM study of the Middle Miocene (Sarmatian) palynoflora from the Lavanttal Basin, Austria: Part I. Bryophyta, Lycopodiophyta, Pteridophyta, Ginkgophyta, and Gnetophyta

机译：奥地利Lavanttal盆地中新世（Sarmatian）古植物区系的LM和SEM组合研究：第一部分：苔藓植物，石生植物，蕨类植物，银杏植物和Gnetophyta

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摘要

Preliminary studies of the palynoflora from the Lavanttal Basin show a relatively rich assemblage of pollen and spores. The palynoflora comprises at least 17 different kinds of spores, representing the Bryophyta (Sphagnum), Lycopodiophyta (Lycopodium, Selaginella), and the Pteridophyta (Dryopteris, Osmunda, Pteris), about 20 different pollen types of conifers assignable to Cupressaceae and Pinaceae, and 130-160 different kinds of angiosperm pollen. In this study, we describe all spores together with pollen from two seed plants, i.e. Ginkgo (Ginkgophyta) and Ephedra (Gnetophyta). The fossil spores and pollen grains are preserved in phosphoritic nodules. Absence of palynomorphs characteristic of marine settings and presence of numerous freshwater algae (diatoms, dinoflagellates, and different green algae) indicate freshwater environments. This is also supported by sedimentological observations suggestive of wetland surroundings, characterised by lakes, swamps, streams, rivers and floodplain areas. The taxa reported here all seem to represent part of azonal vegetation with plants growing in swamps, on hummocks, along border of lakes or streams, on levees, or on sandy patches of floodplains. Preliminary results suggest that the vegetation thrived under a relatively warm and humid climate.
机译：对来自拉凡塔尔盆地的古植物的初步研究表明，花粉和孢子的组合相对丰富。 ly科植物包含至少17种不同种类的孢子，分别代表苔藓植物（Sphagnum），石蒜植物（Lycopodium，卷柏）和蕨类植物（Dryopteris，Osmunda，Pteris），约20种不同花粉类型的针叶树，可分配给柏科和松科， 130-160种不同的被子植物花粉。在这项研究中，我们描述了来自两种种子植物即银杏（Ginkgophyta）和麻黄（Gnetophyta）的所有孢子以及花粉。化石的孢子和花粉粒保留在磷酸根瘤中。缺乏海洋环境特征的古怪物和大量淡水藻类（硅藻，鞭毛藻和不同的绿藻）的存在表明了淡水环境。这也得到了暗示湿地环境的沉积学观察的支持，湿地环境的特征是湖泊，沼泽，溪流，河流和洪泛区。此处报告的分类单元似乎全部代表了地带性植被，其中的植物生长在沼泽，山岗，沿湖或溪流的边界，堤岸或泛滥的沙地上。初步结果表明，植被在相对温暖和潮湿的气候下蓬勃发展。

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