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Palynological analysis of coprolites from the Marília Formation, Bauru Group (Upper Cretaceous), Minas Gerais, Brazil
Cretaceous Research ( IF 1.9 ) Pub Date : 2020-11-01 , DOI: 10.1016/j.cretres.2020.104545
Fábio Antônio de Oliveira , Rodrigo Miloni Santucci

Abstract The deposits of the Serra da Galga Member, Marilia Formation (Bauru Group), in Uberaba, state of Minas Gerais, Brazil, provided a rich fauna of vertebrates of Maastrichtian age. Despite the great faunistic diversity, the plant material recorded so far in these deposits is scarce. Together with the vertebrate remains, a relatively large number of coprolites has been reported for at least two localities in Uberaba, but this material received little attention so far. In this work, we present the first record of palynomorphs found within some coprolites from the Peiropolis and Serra da Galga sites. Monoporate, ephedroid, Gnetaceaepollenites?, Monosulcites?, and Podocarpidites pollen types were found. This pollen set shows that the flora was composed of shrubs (probably Gnetophyta), arboreal conifers, and cycads that lived under arid climate conditions. Moreover, saprophytic fungal remains were found within a few coprolites, representing the first record of this kind for the Bauru Group deposits in Minas Gerais.

中文翻译:

巴西米纳斯吉拉斯州鲍鲁群(上白垩纪)Marília 组粪化石的孢粉学分析

摘要 巴西米纳斯吉拉斯州乌贝拉巴的 Serra da Galga 成员 Marilia 组 (Bauru Group) 的矿床提供了丰富的马斯特里赫特时代脊椎动物群。尽管动物群落的多样性很大,但迄今为止在这些沉积物中记录的植物材料很少。连同脊椎动物遗骸,在乌贝拉巴至少有两个地方已经报道了相对大量的粪化石,但到目前为止,这种材料很少受到关注。在这项工作中,我们展示了在 Peiropolis 和 Serra da Galga 遗址的一些粪化石中发现的孢粉形的第一个记录。发现了 Monoporate、麻黄素、Gnetaceaepollenites?、Monosulcites? 和 Podocarpidites 花粉类型。这个花粉组显示植物群由灌木(可能是根茎植物)、树栖针叶树、和生活在干旱气候条件下的苏铁。此外,在一些粪化石中发现了腐生真菌遗骸,这是米纳斯吉拉斯州 Bauru Group 矿床的首次此类记录。
更新日期:2020-11-01
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