Review of Palaeobotany and Palynology最新文献_第6页

Reconstructing acritarch size distributions in chert: A quantitative approach for using probability models 重建燧石中树冠大小分布：一种使用概率模型的定量方法

IF 1.7 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2025-06-06 DOI: 10.1016/j.revpalbo.2025.105385

Zhiji Ou , Fanwei Meng , Jiqiang Liu

引用次数: 0

Almost forgotten fossil wood points to the existence of an overlooked group of Mesozoic Gondwanan gymnosperms 几乎被遗忘的木材化石表明存在一个被忽视的中生代冈瓦纳裸子植物群

IF 1.7 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2025-05-22 DOI: 10.1016/j.revpalbo.2025.105383

Marc Philippe , Mike Pole , Pierre Maurizot , Lilian Alizert , Gendry Damien

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Tenellisporites capillaris sp. nov., a new dispersed lycopsid megaspore from the Middle–Upper Triassic Badong Formation, Hunan Province, China 湖南中上三叠统巴东组新分散石松类大孢子Tenellisporites capillaris sp. nov.

IF 1.7 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2025-05-21 DOI: 10.1016/j.revpalbo.2025.105384

Hong-Xiao Zhan , Qun Sui , Han Wu , Weiyu Lu , Jianbo Chen , Stephen McLoughlin , Zhuo Feng

{"title":"Tenellisporites capillaris sp. nov., a new dispersed lycopsid megaspore from the Middle–Upper Triassic Badong Formation, Hunan Province, China","authors":"Hong-Xiao Zhan , Qun Sui , Han Wu , Weiyu Lu , Jianbo Chen , Stephen McLoughlin , Zhuo Feng","doi":"10.1016/j.revpalbo.2025.105384","DOIUrl":"10.1016/j.revpalbo.2025.105384","url":null,"abstract":"<div><div>Dispersed megaspore fossils provide crucial insights into the diversity of heterosporous lycopsids through geological time. However, detailed systematic studies on Middle–Late Triassic dispersed lycopsid megaspores of the South China Block are lacking. Here, we report a unique dispersed lycopsid megaspore species, <em>Tenellisporites capillaris</em> sp. nov., from the Middle–Upper Triassic Badong Formation in Hunan Province, China. This trilete megaspore species is characterised by narrow, elevated, membraneous laesurae with ragged finger-like projections; a flattened equatorial zona; and single or rarely bifurcate spines with sharp tips on both the proximal and distal surfaces. These spines are connected basally to form a fine reticulum and gradually increase in thickness and length towards the equator. Ultrastructural analysis reveals that the megaspore wall consists of two layers: 1) a very thin and dense foot layer, 2) a thick, dense outer layer with parallel sporopollenin units. The outermost sporopollenin units transition to vertically arranged units where forming the spinous ornamentation. The morphological and ultrastructural characteristics indicate that the new megaspore species belongs to Isoetales. Our finding represents the first fossil record of <em>Tenellisporites</em> in Asia, enhancing our understanding of the palaeogeographic distribution and diversity of isoetalean lycopsids during the Middle–Late Triassic.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"341 ","pages":"Article 105384"},"PeriodicalIF":1.7,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144139491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An illustrated protocol for extracting palynomorphs from Early Pleistocene pollen-poor sediments using LST Fastfloat 利用LST Fastfloat从早更新世花粉含量较低的沉积物中提取孢异形的说明方案

IF 1.7 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2025-05-15 DOI: 10.1016/j.revpalbo.2025.105372

Valérie Andrieu , Belinda Gambin

{"title":"An illustrated protocol for extracting palynomorphs from Early Pleistocene pollen-poor sediments using LST Fastfloat","authors":"Valérie Andrieu , Belinda Gambin","doi":"10.1016/j.revpalbo.2025.105372","DOIUrl":"10.1016/j.revpalbo.2025.105372","url":null,"abstract":"<div><div>This method for extracting palynomorphs is specifically dedicated for Early Pleistocene pollen-poor carbonate or siliceous sediments in the Mediterranean, which are characterised by prolonged summer droughts. It utilises LST Fastfloat, a non-toxic, low viscosity sodium polytungstate heavy liquid. Due to its physical qualities, particularly its low viscosity, LST Fastfloat enables more efficient pollen concentration compared to other methods, including those that rely on alternative dense liquids.</div><div>This approach was applied to fluviatile and lacustrine deposits in both the western (Marseille) and eastern (Acıgöl, Kocabaş) Mediterranean. Unlike standard method, LST Fastfloat produced highly concentrated pollen residues and clear pollen slides, reducing analysis time, which is an important advantage in a labour-intensive discipline such as palynology. The primary drawback of this method is its high cost, although it is partially recyclable.</div><div>Our article is designed to be didactic and richly illustrated, featuring figures and photographs to facilitate its application, particularly for beginners. The positive results presented here may encourage researchers to sample sediments previously considered pollen-poor or devoid of palynomorphs, especially from understudied regions of major biogeographical or archaeological interest, such as the arid regions of the tropics and the Mediterranean.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"341 ","pages":"Article 105372"},"PeriodicalIF":1.7,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144194565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Paleoecological and paleogeographical characterization of Portalites Hemer & Nygreen, 1967 in the Gondwanan record 冈瓦南记录中Portalites的古生态古地理特征。Hemer & Nygreen, 1967

IF 1.7 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2025-05-15 DOI: 10.1016/j.revpalbo.2025.105374

Tainara Caroline de Aguiar Medeiros, Paulo A. Souza, Cristina Moreira Félix, Rafael R. Bender

{"title":"Paleoecological and paleogeographical characterization of Portalites Hemer & Nygreen, 1967 in the Gondwanan record","authors":"Tainara Caroline de Aguiar Medeiros, Paulo A. Souza, Cristina Moreira Félix, Rafael R. Bender","doi":"10.1016/j.revpalbo.2025.105374","DOIUrl":"10.1016/j.revpalbo.2025.105374","url":null,"abstract":"<div><div><em>Portalites</em> is a genus characterized by circular spores with a functional pore and a smooth or ornamented surface, which can be attributed to the kingdom Fungi. The species involved are abundantly found in palynological preparations of interglacial and post-glacial deposits from Carboniferous and Permian of Gondwana, but they are also found locally up to the Triassic. The genus includes five species: <em>Portalites confertus</em> (type species), <em>P. gondwanensis</em>, <em>P. baculus</em>, <em>P. niger</em>, and <em>P. rigidus</em>. Materials derived from the Amazonas (Monte Alegre Formation) and the Paraná basins (Itararé Group and Rio Bonito Formation) in Brazil, ranging from the Pennsylvanian to the Cisuralian, were directly analyzed to understand the association of <em>Portalites</em> with the local flora. We observed that the studied species are primarily associated with Lycopsida and Filicopsida. Through the integration of lithological data, we identified that <em>Portalites</em> predominantly occurs in fine-grained sediments, indicative of low-energy, humid environments, and in proximity to freshwater or brackish conditions. In terms of paleogeography, the species exhibits its widest distribution in the Gondwana basins during the Pennsylvanian and Cisuralian.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"341 ","pages":"Article 105374"},"PeriodicalIF":1.7,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144071113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Resilient gymnosperms: reassessing floral dynamics at the permian–triassic extinction in Meishan 弹性裸子植物：重新评估梅山二叠纪-三叠纪物种灭绝的花卉动态

IF 1.7 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2025-05-13 DOI: 10.1016/j.revpalbo.2025.105373

Elke Schneebeli-Hermann , Francesca Galasso

{"title":"Resilient gymnosperms: reassessing floral dynamics at the permian–triassic extinction in Meishan","authors":"Elke Schneebeli-Hermann , Francesca Galasso","doi":"10.1016/j.revpalbo.2025.105373","DOIUrl":"10.1016/j.revpalbo.2025.105373","url":null,"abstract":"<div><div>The impact of the Permian–Triassic mass extinction on terrestrial plant diversity and ecosystems is still controversially discussed. While for numerous plant fossil records, particularly those from terrestrial sites, adequate dating is unfeasible, for plant microfossil records, deposited in marine environments, independent biostratigraphic dating is usually possible. Since the ratification of the Global Stratotype Section and Point (GSSP) for the Permian–Triassic boundary in Meishan, a plethora of not only palynological data but also precise geochronological ages, high-resolution geochemical and biostratigraphic datasets are available. Here, we aim to revise the palynological data published by Ouyang & Utting in 1990 in the current geochronological framework. Their three initially described assemblage zones yield a wealth of information with respect to depositional environment and vegetation composition- from an off-shore Permian setting to a more proximal setting in the Triassic. To date, the comparison of the palynological data with the carbon isotope record, current lithostratigraphy, and U/Pb ages indicates that gymnosperm-dominated vegetation thrived during and after the Permian–Triassic extinction event in the continental area near Meishan.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"341 ","pages":"Article 105373"},"PeriodicalIF":1.7,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144071114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

New Mississippian materials of the lycopsid rootstock Stigmaria Brongniart from South China: Evidence for anatomical conservatism in this fossil-genus 华南石松砧木的密西西比新材料：该化石属解剖保守性的证据

IF 1.7 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2025-05-08 DOI: 10.1016/j.revpalbo.2025.105363

Qiqi Yang , Bingxin Li , Jiashu Wang , Pu Huang , Le Liu , Jinzhuang Xue

{"title":"New Mississippian materials of the lycopsid rootstock Stigmaria Brongniart from South China: Evidence for anatomical conservatism in this fossil-genus","authors":"Qiqi Yang , Bingxin Li , Jiashu Wang , Pu Huang , Le Liu , Jinzhuang Xue","doi":"10.1016/j.revpalbo.2025.105363","DOIUrl":"10.1016/j.revpalbo.2025.105363","url":null,"abstract":"<div><div>The fossil-genus <em>Stigmaria</em> Brongniart represents the underground rooting system of arborescent lycopsids, which were important elements in coal-swamp forests during the Carboniferous to Permian periods. The morphology and anatomy of <em>Stigmaria</em> have been extensively studied, mainly based on well-preserved materials from the Pennsylvanian of Euramerica, but knowledge about its pre-Pennsylvanian characters, taxonomy, and evolutionary history remains to be expanded. Here, new materials of <em>Stigmaria</em> are described from the Visean (Mississippian) Xiangbai Formation of Longli, Guizhou, southwestern China and are classified into <em>Stigmaria</em> cf. <em>S</em>. <em>ficoides</em> (Sternberg) Brongniart. Our plant is characterized by navel-shaped rootlet scars, which are arranged helically around rhizomorphs. Its anatomy shows a solenostele with endarch primary xylem and radially aligned secondary xylem, which is divided into wedge-shaped segments by rootlet traces. The cortex is divided into five zones, but there is no periderm. Rootlet vascular bundles are triangular monarch, protruding from the inner cortex to the rhizomorph surface. Our find represents one of the two earliest records of <em>Stigmaria</em> with anatomy preserved. The other Visean record (Glenarbuck, England) is represented by limited material, and thus many more anatomical features demonstrated in our plant are first known in the pre-Pennsylvanian <em>Stigmaria</em>. These Visean records demonstrate great similarities in anatomy with the Pennsylvanian and Permian materials of <em>Stigmaria ficoides</em>, indicating anatomical conservatism and long-term evolutionary stasis in this fossil-genus.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"340 ","pages":"Article 105363"},"PeriodicalIF":1.7,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143948197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Palynoflora of the Araripe and Jatobá basins (Brazil) during the Early Cretaceous (late Aptian): Biostratigraphy and depositional controls 早白垩世（Aptian晚期）巴西Araripe和jatob<e:1>盆地的孢粉区系：生物地层学和沉积控制

IF 1.7 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2025-04-30 DOI: 10.1016/j.revpalbo.2025.105370

Juan David Vallejo , Regina Buarque Gusmão , Alessandra Santos , Claus Fallgatter , Virgínio Henrique de Miranda Lopes Neumann , Marcelo de Araujo Carvalho , Enelise Katia Piovesan

{"title":"Palynoflora of the Araripe and Jatobá basins (Brazil) during the Early Cretaceous (late Aptian): Biostratigraphy and depositional controls","authors":"Juan David Vallejo , Regina Buarque Gusmão , Alessandra Santos , Claus Fallgatter , Virgínio Henrique de Miranda Lopes Neumann , Marcelo de Araujo Carvalho , Enelise Katia Piovesan","doi":"10.1016/j.revpalbo.2025.105370","DOIUrl":"10.1016/j.revpalbo.2025.105370","url":null,"abstract":"<div><div>The Santana Group, Upper Aptian, records the post-rift stage of the Araripe and Jatobá basins. The palynological zones and its geological evolution is still controversial and requires review as new information becomes available. Palynological analysis play a crucial role in petroleum geology in Brazilian basins, as it allows for the reconstruction of paleoenvironmental conditions, stratigraphic correlation, and the definition of ages and potential areas for hydrocarbon exploration. This study integrates sedimentological and palynological data from drill cores in the Araripe and Jatobá basins, which consist of siliciclastic rocks intercalated with limestons e and evaporites intervals. Our analysis is used here to refine the temporal interval and depositional conditions of the late Aptian sequences of such basins. Palynological analysis resulted in the identification of 159 taxa and suggests the presence of the <em>Sergipea variverrucata</em> Biozone (P-270). The late Aptian is defined by their last occurrence of <em>S. variverrucata</em>. The presence of marine palynomorphs (e.g., <em>Subtilisphaera</em> sp. and foraminiferal test linings) indicates marine incursions into the basins. Based on palynological associations and sedimentary facies, the Santana Group consists of a fluvio-deltaic transitioning from a semi-enclosed lagoon and shallow marine environments deposited during the Early Aptian. Additionally, foraminiferal test linings in samples from the Crato Formation have been recorded, reinforcing marine incursions into the basins.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"340 ","pages":"Article 105370"},"PeriodicalIF":1.7,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143943361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Middle Jurassic plant fossils from the East Gobi Basin (Mongolia) 蒙古东戈壁盆地中侏罗世植物化石

IF 1.7 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2025-04-30 DOI: 10.1016/j.revpalbo.2025.105371

A. Muraviev , J. Kvaček , L. Uranbileg , D. Otgonsuren , J. Dashkhorol , E. Kustatscher

{"title":"Middle Jurassic plant fossils from the East Gobi Basin (Mongolia)","authors":"A. Muraviev , J. Kvaček , L. Uranbileg , D. Otgonsuren , J. Dashkhorol , E. Kustatscher","doi":"10.1016/j.revpalbo.2025.105371","DOIUrl":"10.1016/j.revpalbo.2025.105371","url":null,"abstract":"<div><div>This study presents the first report on Middle Jurassic plant fossils from the Khamarkhoovor Formation, Dovtsog Khudag area, East Gobi Basin, Mongolia. 20 species of fossil plants from 11 genera have been identified, including liverworts, horsetails, ferns, cycadophytes, ginkgophytes, czekanowskialeans and conifers.</div><div>Based on sedimentological analysis and plant assemblages, we interpret the depositional environment as alluvial plain and swamp. Alluvial plain deposits are characterised by the presence of ginkgophytes, cycads (<em>Nilssonia</em>) and conifers (<em>Pityophyllum</em>). The swamp environment is characterised by Czekanowskiales (<em>Czekanowskia, Phoenicopsis</em>), horsetails (<em>Equisetites</em>) and ferns (<em>Coniopteris, Cladophlebis</em>).</div><div>The most significant species for phytostratigraphy are <em>Coniopteris snigirevskiae</em>, <em>Cladophlebis haiburnensis</em>, <em>Cl. akulovii</em> (ferns), <em>Czekanowskia (Subg. Vachrameevia) teslenkoi</em>, and <em>Phoenicopsis (Subg. Phoenicopsis) angustifolia.</em> The fossil plant remains, combined with published data on the phytostratigraphy of Jurassic sedimentary basins in Mongolia, as well as adjacent regions of China and Siberia, suggest that the studied deposits of the Khamarkhoovor Formation belong to the Middle Jurassic, most likely the Aalenian–Bajocian stages. The studied flora corresponds to the Siberian Floristic Province, which comprises warm-temperate elements and indicates seasonal climatic fluctuations.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"340 ","pages":"Article 105371"},"PeriodicalIF":1.7,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143904310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Serpukhovian (Upper Mississippian) red algae from the type Mississippian region of southern Illinois, U.S.A 来自美国伊利诺斯州南部密西西比型地区的Serpukhovian（上密西西比）红藻

IF 1.7 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2025-04-26 DOI: 10.1016/j.revpalbo.2025.105362

Qingyi Sheng , Paul Brenckle

引用次数: 0