Abstract The Rio Maior deposits, part of the Tagus Basin located in western Portugal, are comprised of sediments from late Pliocene to earliest Gelasian age. Using combined light and scanning electron microscopy, we report, for the first time, nine important taxa in late Pliocene, Piacenzian sediments from south-western Europe. Eight pollen-taxa (Cercidiphyllum, Craigia, Mortoniodendron, Diplopanax, Zanthoxylum, Sapotaceae, Sideroxylon and Leitneria) belong to extant plant groups currently living in tropical to temperate areas. The record of Trigonobalanopsis represents an extinct genus in the oak family (Fagaceae). The records of these taxa indicate the presence of a warm-temperate mixed forest during most parts of the Piacenzian at this latitude.

中文翻译：

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结合光和扫描电子显微镜研究揭示了葡萄牙西部上新世晚期巨热和中温元素的花粉记录

摘要 Rio Maior 矿床是葡萄牙西部塔霍盆地的一部分，由上新世晚期至最早的格拉斯时代的沉积物组成。使用组合光学显微镜和扫描电子显微镜，我们首次报告了欧洲西南部皮亚琴察晚期上新世沉积物中的九个重要分类群。八种花粉类群（连香树、Craigia、Mortoniodendron、Diplopanax、Zanthoxylum、Sapotaceae、Sideroxylon 和Leitneria）属于目前生活在热带到温带地区的现存植物群。Trigonobalanopsis 的记录代表了橡树科（Fagaceae）中一个已灭绝的属。这些分类群的记录表明，在该纬度皮亚琴察的大部分地区存在暖温带混交林。