{"title":"A new Rhaetian plant assemblage from Zilanba, the northern Sichuan Basin, South China","authors":"","doi":"10.1007/s12549-024-00599-1","DOIUrl":null,"url":null,"abstract":"<h3>Abstract</h3> <p>Triassic and Jurassic strata are thick and widely distributed in the Sichuan Basin, South China. In particular, the continental Upper Triassic Xujiahe Formation is well-exposed in this region, yielding rich assemblages of fossil plants. Here, a new Rhaetian fossil assemblage is reported from Zilanba in the Guangyuan area, northern Sichuan Basin. In this locality, 29 species of fossil plants belonging to 17 genera have been newly collected and identified within Member III of the Xujiahe Formation. Based on the floral assemblages and previous magnetostratigraphic and palynostratigraphic studies, the host strata are considered Rhaetian in age. This flora in the Guangyuan area is dominated by Cycadales and Bennettitales but also contains abundant ferns and less common sphenopsids, conifers and other gymnosperms. The occurrence of some climate-diagnostic plants, such as Dipteridaceae, <em>Anthrophyopsis</em> and <em>Ptilozamites</em>, indicate that this area experienced a humid and warm tropical or subtropical climate during the Rhaetian.</p>","PeriodicalId":48706,"journal":{"name":"Palaeobiodiversity and Palaeoenvironments","volume":"76 1","pages":""},"PeriodicalIF":1.4000,"publicationDate":"2024-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Palaeobiodiversity and Palaeoenvironments","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.1007/s12549-024-00599-1","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"BIODIVERSITY CONSERVATION","Score":null,"Total":0}
引用次数: 0
Abstract
Triassic and Jurassic strata are thick and widely distributed in the Sichuan Basin, South China. In particular, the continental Upper Triassic Xujiahe Formation is well-exposed in this region, yielding rich assemblages of fossil plants. Here, a new Rhaetian fossil assemblage is reported from Zilanba in the Guangyuan area, northern Sichuan Basin. In this locality, 29 species of fossil plants belonging to 17 genera have been newly collected and identified within Member III of the Xujiahe Formation. Based on the floral assemblages and previous magnetostratigraphic and palynostratigraphic studies, the host strata are considered Rhaetian in age. This flora in the Guangyuan area is dominated by Cycadales and Bennettitales but also contains abundant ferns and less common sphenopsids, conifers and other gymnosperms. The occurrence of some climate-diagnostic plants, such as Dipteridaceae, Anthrophyopsis and Ptilozamites, indicate that this area experienced a humid and warm tropical or subtropical climate during the Rhaetian.
期刊介绍：
Palaeobiodiversity and Palaeoenvironments is a peer-reviewed international journal for the publication of high-quality multidisciplinary studies in the fields of palaeobiodiversity, palaeoenvironments and palaeobiogeography. Key criteria for the acceptance of manuscripts are a global scope or implications of problems on a global scale significant not only for a single discipline, a focus on the diversity of fossil organisms and the causes and processes of change in Earth’s history. The topics covered include: Systematic studies of all fossil animal / plant groups with a special focus on palaeoenvironmental investigations, palaeoecosystems and climate changes in Earth’s history, environment-organism interaction, comparison of modern and ancient sedimentary environments, palaeoecology and palaeobiogeography.
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