The unique co-occurrence of thyriothecia belonging to three fossil genera of epiphyllous fungi, Stomiopeltites Alvin & Muir (Micropeltidaceae), Callimothallus Dilcher, and Trichothyrites Rosendahl (Microthyriaceae), are reported on the leaves of the same host plant, Cunninghamia shangcunica Kodrul, Gordenko & Sokolova from the Oligocene Shangcun Formation of the Maoming Basin, South China. In China, Stomiopeltites is identified for the first time, Callimothallus is known from the Oligocene and Miocene of Guangxi and Zhejiang provinces, and Trichothyrites previously has been found only in the Eocene palynological assemblages of the Maoming Basin. The presence of abundant and diverse epiphyllous micromycetes, together with the taxonomic composition of the Shangcun megaflora and pollen assemblage, as well as quantitative climatic estimates obtained using Climate Leaf Analysis Multivariate Program, confirm the existence of a warm and humid climate in this region during the late early Oligocene. The geographic and stratigraphic distributions, comparisons with extant analogues, as well as ecological and paleoclimatic implications of the fossil fungi are discussed.

中文翻译：

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华南渐新世杉木叶片上的多种叶生真菌及其古生态和古气候意义

据报道，在同一寄主植物Cunninghamia shangcunica Kod的叶子上同时存在属于叶生真菌的三个化石属，即Stomiopeltites Alvin & Muir (Micropeltidaceae)、Callimothallus Dilcher 和Trichothyrites Rosendahl (Microthyriaceae)。& Sokolova 来自华南茂名盆地渐新统上村组。我国首次发现Stomiopeltites，Callimothallus见于广西、浙江渐新世和中新世，Trichothyrites以前仅在茂名盆地始新世孢粉组合中发现。丰富多样的叶生小菌的存在，加上上村巨型植物群和花粉组合的分类组成，以及使用气候叶分析多元程序获得的定量气候估计，证实了该地区在此期间存在温暖潮湿的气候。渐新世晚期。讨论了真菌化石的地理和地层分布、与现存类似物的比较以及生态和古气候影响。