Palaeoworld最新文献

{"title":"Holocene palaeoenvironments of southern Sikhote-Alin Mountains (southern Far East), reconstructed from palaeontological data","authors":"Guzel Danukalova ,&nbsp;Mikhail Tiunov ,&nbsp;Eugenia Osipova ,&nbsp;Ravil Kurmanov ,&nbsp;Valerya Omelko ,&nbsp;Andrey Panteleev ,&nbsp;Alexander Gladchenkov","doi":"10.1016/j.palwor.2025.200943","DOIUrl":"10.1016/j.palwor.2025.200943","url":null,"abstract":"<div><div>Due to the rarity of the archaeological cave sites in Primorsky Krai, the site known as “Perspektivnaya Cave” located in the southern part of the hard-to-reach areas of the the Sikhote-Alin mountain system north-north-east of Vladivostok, is of considerable interest. The first results of its study emphasise the importance of further research since human bones and ceramics were found there, as well as numerous mammal and bird bones, shells of terrestrial molluscs, and spores and pollen. These proxies can be utilised to contextualise the migration and presence of humans within an environmental framework. Palynological studies made it possible to reconstruct the landscapes and climatic conditions of the Early–Late Holocene when forest-steppe landscapes were widespread in the adjacent territory. Mesophilous herbs prevailed in open spaces, steppe plants and ferns on rocky slopes, mixed forests on the mountain slopes, and birch forests and swamps on river floodplains. Detailed studies have revealed the various fluctuations in the vegetation development described in the article. The warmest and most humid conditions were observed in the Middle Holocene, the optimal phase of the Holocene. A moderately warm and drier climate was characteristic of the Early and Late Holocene. The composition and structure of faunas from different periods of the Holocene corroborates the results of palynological studies. The Middle Holocene bird and mammal faunas are the most diverse in composition. The fossil molluscs lived under moderate climatic conditions in broadleaved forests growing near the cave, as well as in open spaces (forest edges or meadows) with well-developed herbaceous vegetation and in places of high humidity. Freshwater mollusc remains indicate that a river with a diverse range of near-water vegetation flowed near the cave.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 5","pages":"Article 200943"},"PeriodicalIF":1.7,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070184","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}

{"title":"Shallow-water trilobites from the Koumenzi Formation (Katian, Upper Ordovician) of Qilian, northeastern Qinghai, China: Biogeographical links with Kazakh terranes","authors":"Xin Wei ,&nbsp;Yu-Chen Zhang ,&nbsp;Ren-Bin Zhan ,&nbsp;Yi Wang ,&nbsp;Peng Tang ,&nbsp;Yong Wang ,&nbsp;Ya-Tao Zhang ,&nbsp;Jia-Qi Song","doi":"10.1016/j.palwor.2025.200940","DOIUrl":"10.1016/j.palwor.2025.200940","url":null,"abstract":"<div><div>A shallow-water trilobite fauna, with low diversity (seven species of six genera), from the Koumenzi Formation (Katian) in the Qilian area, northeastern Qinghai Province, Northwest China, is recognised as the <em>Pliomerina</em> Association. Of these, <em>Dulanaspis</em> and <em>Amphilichas</em> are reported for the first time in the North Qilian Mountains. The shallow-water <em>Pliomerina</em> and relatively deep-water <em>Birmanites</em>-<em>Sinocybele</em> associations were found to occur in the Qilian and Menyuan areas, respectively, during the Katian. They exhibit a distinctive ecological differentiation with water depth from inner shelf to outer shelf environments. The <em>Pliomerina</em> Association of the Qilian area clearly belongs to the <em>Pliomerina</em> and/or <em>Sinocybele</em> Province of the Proto-Tethys Archipelagic Ocean. Faunal evidence indicates that the palaeogeographical position of the North Qilian Mountains area was situated closer to the Kazakh terranes during the Katian, particularly to the Chu-Ili and Chingiz-Tarbagatai terranes.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 5","pages":"Article 200940"},"PeriodicalIF":1.7,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143929083","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}

{"title":"Oldest hippopotamus record (Hippopotamus antiquus) from Anatolia (Datça Peninsula, Southwest Türkiye)","authors":"Didem Tütenk ,&nbsp;Serdar Mayda","doi":"10.1016/j.palwor.2025.200938","DOIUrl":"10.1016/j.palwor.2025.200938","url":null,"abstract":"<div><div>Taxonomy and chronology of the Eurasian fossil hippopotamuses have been under debate, particularly regarding fossil records from Southwest and Central Europe. The genus <em>Hippopotamus</em> is recognized as a highly successful group that, during the Pleistocene, expanded its range from Western Europe through Anatolia, encompassing the entire Middle East and the eastern and northern shores of Africa, being designated as the “Hippo event”. However, despite this extensive expansion, detailed analysis of paleontological records from these regions reveals that Anatolia, which served as a suitable land bridge between Europe, Asia, and Africa, contains a relatively limited number of <em>Hippopotamus</em> records. Therefore, the scarcity of records in Anatolia presents a paradox in paleobiogeographic studies.</div><div>This research is the first paleontological study in Türkiye to describe a <em>Hippopotamus antiquus</em> specimen from the lower Pleistocene, providing new insights into the taxonomy, systematics, and biogeography of Anatolian hippos. The specimen described here was discovered in the Reşadiye, Datça region (Southwest Anatolia) during the early 1980s. The specimen exhibits definitive diagnostic characteristics of <em>H</em>. <em>antiquus</em>, representing the first and earliest record of this species in Anatolia. The temporal and spatial correlations of the Datça specimens with contemporaneous taxa from Europe, Africa, and other parts of Anatolia (e.g., Burdur-Kocakır-2, Karain Cave, Konya-Dursunlu) highlight the geographical and chronological continuity of European hippos during the Quaternary. This study provides new data and insights into the evolution and dispersal patterns of these large semi-aquatic mammals.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 5","pages":"Article 200938"},"PeriodicalIF":1.7,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143941098","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}

{"title":"The first fossil species of Trichopria Ashmead, 1893 (Hymenoptera: Diapriidae) from the Miocene Zhangpu biota","authors":"Manuel Brazidec ,&nbsp;Vincent Perrichot","doi":"10.1016/j.palwor.2025.200939","DOIUrl":"10.1016/j.palwor.2025.200939","url":null,"abstract":"<div><div>Following studies of the aculeate families Bethylidae, Chrysididae, Formicidae, and Apidae, we report here the Diapriidae, the fifth hymenopteran family from the middle Miocene Zhangpu amber of China. A fossil species belonging to <em>Trichopria</em> <span><span>Ashmead, 1893</span></span> is described and figured from a male specimen. The new extinct species, <em>Trichopria electrosinica</em> n. sp., is characterized by the subround and hypognathous head, the flagellomeres each with 6–8 long setae, the metanotum with longitudinal keels, the petiole two times longer than wide and carinate, and the fore basitarsomere with a row of setae along the inner margin. <em>Trichopria</em> is one of the largest diapriid genus, with some species used in pest control program against fruit flies, but <em>Trichopria electrosinica</em> n. sp. is its first described fossil species. Its absence in older and long-known deposits is indicative of the disparate Diapriidae fossil record. Its occurrence in both China and Dominican Republic during the Miocene suggests that the genus was already widespread at that time.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 5","pages":"Article 200939"},"PeriodicalIF":1.7,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143947479","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}

{"title":"The late Eocene pine seed cones from Mangkang Basin, southeastern Xizang (Tibet) and their biogeographic significance","authors":"Xuan-Rong Yao ,&nbsp;Yi Gao ,&nbsp;Ren-Dan Yang ,&nbsp;Jiang-Bo Meng ,&nbsp;Shu-Feng Li ,&nbsp;Tao Su","doi":"10.1016/j.palwor.2025.200935","DOIUrl":"10.1016/j.palwor.2025.200935","url":null,"abstract":"<div><div><em>Pinus</em> is widely distributed in the Northern Hemisphere, and today is the largest gymnosperm genus with a rich fossil record. However, the biogeographic history at section or subsection level remains unclear. Here, we report a new finding of female cones from the late Eocene of the Mangkang Basin, southeastern Xizang (Tibet). By morphological comparison between fossil and extant species, this cone type is identified as a new species in subsection <em>Pinus</em>, namely <em>Pinus mangkangensis</em> Yao and Su, n. sp. This new species is morphologically similar to the living species <em>P</em>. <em>yunnanensis</em>, which is distributed in Southwest China adjacent to the fossil site. The finding of <em>P</em>. <em>mangkangensis</em> provides important evidence for elucidating the biogeographic history and diversification of subsection <em>Pinus</em> in Southwest China. Together with other fossil records of section <em>Pinus</em> in East Asia, we propose that <em>P</em>. <em>mangkangensis</em> represents southern lineages and suggests that ancestral species of subsection <em>Pinus</em> dispersed to lower latitude regions during the Eocene. Subsequently, the diversification of species in subsection <em>Pinus</em> took place during the Miocene.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 5","pages":"Article 200935"},"PeriodicalIF":1.7,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143947363","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}

{"title":"First hadrosauroid record from Petreşti-Arini (Transylvanian Basin, Romania; Upper Cretaceous) and its implications for the evolution of the Hațeg Island vertebrate faunas","authors":"Aaron J. Ebner ,&nbsp;Zoltán Csiki-Sava ,&nbsp;Tim Treiber ,&nbsp;Radu Totoianu ,&nbsp;Felix J. Augustin","doi":"10.1016/j.palwor.2025.200937","DOIUrl":"10.1016/j.palwor.2025.200937","url":null,"abstract":"<div><div>The uppermost Cretaceous continental deposits of Transylvania (western Romania) represent one of the most iconic sources for fossil vertebrates from the Late Cretaceous European Archipelago. Among the numerous uppermost Cretaceous sites known from the Transylvanian Basin, Petreşti-Arini is one of the most important, due to its geological age and preservation of an unusual transitional near-shore environment. Current knowledge of the local vertebrate assemblage included many of the groups typically present in the Upper Cretaceous of Romania but not the hadrosauroids or titanosaurs. In this report, we describe a right humerus of a hadrosauroid discovered at Petreşti-Arini in the lower part of the Sebeş Formation. The humerus can be confidently assigned to a basal hadrosauroid based on its long and robust deltopectoral crest (45% of the humeral length) that is nevertheless shorter than in derived members of the clade (in which the deltopectoral crest is &gt; 55% of humeral length). The specimen represents the first record of hadrosauroids from Petreşti-Arini, dated to around the latest Campanian, making it not only the stratigraphically oldest record of hadrosauroids in the Transylvanian Basin but also one of their earliest well-constrained occurrences across Haţeg Island overall. The specimen refines previous scenarios and gives a better age constraint on the arrival of hadrosauroids to Haţeg Island, documenting their introduction to this area before the end of the Campanian. Additionally, it might imply some sort of paleoenvironmental control over hadrosauroid distribution on Haţeg Island.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 5","pages":"Article 200937"},"PeriodicalIF":1.7,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143947362","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}

{"title":"A possible biotic precursor, Archaeodunaliella junggarensis n. gen. n. sp., in the Upper Paleozoic Fengcheng Formation from Junggar Basin, Northwest China","authors":"Li-Ye Zhu ,&nbsp;Hua Zhang ,&nbsp;Tian-Ming Shi ,&nbsp;Peng Tang","doi":"10.1016/j.palwor.2025.200936","DOIUrl":"10.1016/j.palwor.2025.200936","url":null,"abstract":"<div><div>Biotic precursors are key factors in evaluating hydrocarbon-source rocks. They are normally hard to determine due to the degradation of organisms, and the classification is more challenging since the incompleteness of fossil preservation. In the present study, spherical fossil microalgae are abundant and well-preserved in chert layers of the Fengcheng Formation (Kasimovian–Asselian) from the Well MY1 in the Mahu Sag, northwestern Junggar Basin, Xinjiang, Northwest China. These spheres are so far known to distribute in the northern part of the Mahu Sag, ranging from deep center to marginal area of the Mahu paleo-lake. They are very abundant and considered to be primary producer around the Well MY1 and nearby in the Mahu paleo-lake during the depositional period of the Fengcheng Formation. These spherical microalgae are likely the biotic precursors in the Fengcheng Formation source rock. Due to the absence of isolated specimens, detailed systematic study cannot be made on these spherical fossil microalgae and their classification is still uncertain. Specimens of these spherical fossil microalgae are extracted for the first time from the Well MY1. They show a great similarity to the palmelloid cells of the modern <em>Dunaliella</em> algae in terms of morphology, ecology, physiology, and biomarker compounds. These spherical fossil microalgae are herein described as a new genus and species, i.e., <em>Archaeodunaliella junggarensis</em> n. gen. n. sp. under the family Dunaliellaceae of the order Chlorophyta, which has an affinity with modern <em>Dunaliella</em>.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 5","pages":"Article 200936"},"PeriodicalIF":1.7,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143947477","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}

{"title":"Corals from the middle Visean (Mississippian) coral biostrome in the Yashui section, Guizhou, South China: Palaeogeographical implication","authors":"Hui Wang ,&nbsp;Le Yao ,&nbsp;Wei Lin ,&nbsp;Qiu-Lai Wang","doi":"10.1016/j.palwor.2025.200934","DOIUrl":"10.1016/j.palwor.2025.200934","url":null,"abstract":"<div><div>Following the Late Devonian mass extinction events, rugose corals underwent a major phase of proliferation during the Visean Age (Middle Mississippian), as demonstrated by the diversification of reef-building colonial corals. The detailed taxonomical composition and palaeogeographical distribution of these reef builders, however, have not yet been explicitly studied. In this study, rugose and tabulate corals are described from the middle Visean coral biostrome in the Yashui section of central Guizhou, South China. Seven species of five genera are recognised, including solitary rugose corals <em>Arachnolasma cylindricum</em>, <em>Heterocaninia guixianense</em>, <em>H</em>. <em>multiseptatum</em>, and <em>Kueichouphyllum sinense</em>, colonial rugose coral <em>Stylostrotion houi</em>, and tabulate corals <em>Syringopora</em> cf. <em>ramulosa</em> and <em>Sy</em>. cf. <em>reticulata</em>. Within this coral fauna, <em>St</em>. <em>houi</em>, <em>Sy</em>. cf. <em>ramulosa</em> and <em>K</em>. <em>sinense</em> are most abundant and distinguished as the main builders of the biostrome. In the middle Visean, the same coral species of the Yashui coral fauna also occurred in other regions in Asia, which are positioned palaeogeographically in the eastern Palaeotethys.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 5","pages":"Article 200934"},"PeriodicalIF":1.7,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143947478","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}

{"title":"The early Holocene vegetation history and quantitative reconstruction of climate in the Chahanur Lake, Inner Mongolia Plateau, China","authors":"Xu-Ran Zhang ,&nbsp;Hua-Yong Zhang ,&nbsp;Zhong-Yu Wang ,&nbsp;Hao Chen ,&nbsp;Xiao-Chang Wu ,&nbsp;Zhao Liu","doi":"10.1016/j.palwor.2025.200933","DOIUrl":"10.1016/j.palwor.2025.200933","url":null,"abstract":"<div><div>Vegetation is sensitive to climate change, and lake sediments store much information about palaeovegetation. Although environmental information has been recorded for most of the world’s lakes, some vegetation and climate history inconsistencies have persisted since the Holocene due to large regional differences. In this study, sediment samples were collected from Chahanur Lake on the Inner Mongolia Plateau, the dating sequence of the samples was determined by Accelerator Mass Spectrometry (AMS) ¹⁴C dating, and the vegetation history was reconstructed using the biome method and the climate was reconstructed using the weighted averaging partial least squares (WAPLS) method. Vegetation and climate history were systematically analysed. The results showed that the profile age of the lake was 11438–7918 cal. yr BP. During the early Holocene, vegetation evolved from sparse forest steppe (11438–10092 cal. yr BP) to broad-leaved forest steppe (10092–9288 cal. yr BP), and finally to the sparse forest steppe (9288–7918 cal. yr BP). Climate changed from cold and dry during 11438–10092 cal. yr BP, to warm and wet between 10092 and 9288 cal. yr BP, then warm and dry from 9288 to 7918 cal. yr BP. The reconstruction of palaeovegetation and palaeoclimate indicates increased precipitation during the early Holocene on the Inner Mongolia Plateau. This supports previous studies on palaeovegetation and enriches the Holocene pollen database.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 5","pages":"Article 200933"},"PeriodicalIF":1.7,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143923705","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}

{"title":"Petrographic, palaeofloral, and taphonomic characteristics of the Permian coal-bearing sequences in Korba Basin, Central India: Implications for their palaeoecology and depositional settings","authors":"Vivek Kumar Mishra ,&nbsp;Vinod Atmaram Mendhe ,&nbsp;Vikram Partap Singh ,&nbsp;Shreya Mishra ,&nbsp;Srikanta Murthy ,&nbsp;Alka D. Kamble ,&nbsp;Sayed W. Abrar","doi":"10.1016/j.palwor.2025.200931","DOIUrl":"10.1016/j.palwor.2025.200931","url":null,"abstract":"<div><div>The coal-bearing deposits associated with the Barakar Formation of the Korba Basin were examined through a multi-disciplinary analysis, including organic petrographic, palynofacies, palynological, and taphonomic techniques. This cohesive approach is decisive for elucidating the genesis and evolution of organic matter, determining age constraints and reconstructing the palaeoecological and depositional environments during peat accumulation. The petrographic studies demonstrate that the vitrinite group of macerals has dominance (average 40.2 vol.%) over the inertinite and liptinite groups in the organic composition. Within the vitrinite group, the telovitrinite subgroup is chiefly comprised of the collotelinite maceral (average 25.7 vol.%), indicating the higher terrestrial influx and the presence of anaerobic environment conditions. While palynofacies analysis reveals dominance of degraded organic matter (average 39.88%). The subsequent degradation of such vegetation, probably caused by bacterial activity (and/or mechanical breakdown), results in substantial amounts of degraded organic matter and vitrodetrinite maceral (average 12.5 vol.%). The studied palynoassemblage is largely dominated by bisaccate pollen represented by <em>Scheuringipollenites</em>, <em>Faunipollenites</em>, <em>Striatopodocarpites</em>, <em>Striasulcites</em>, etc. Based on inter-, intra- and Gondwanan palynological correlation, these palynoassemblages are Artinskian in age. Further, the affinity of palynoassemblage reflects glossopterid-dominated forest along with lower proportions of Coniferales (average 2.3%) and Peltaspermales (average 1.8%) in relatively warm and humid climatic conditions. The appreciable presence of cordaites (average 12.3%), indicated by the monosaccate pollen of <em>Parasaccites</em> and <em>Barakarites</em>, suggests high terrigenous input into the mire. However, the occurrence of the spores of filicopsid and lycopsid indicates a significant contribution from herbaceous vegetation.</div><div>Further, the values of various petrographic indices and their cross-plotting suggest that the precursors of the peat-forming vegetation (mainly telmatic) were deposited in wet forest settings under mesotrophic hydrological conditions with intermittent fluctuation to rheotrophic conditions. Likewise, the palynofacies analysis indicates that organic matter deposition occurred under suboxic conditions in distal settings. The diverse palynofacies elements retrieved indicate that organic matter deposition occurred under suboxic conditions in distal settings. The taphonomic studies reveal the predominance of buoyant saccate taxa (Group E) and the rarity of spores in the recovered palynoassemblage, indicating an allochthonous origin for the organic matter and the influence of depositional environment on the palynocomposition.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 5","pages":"Article 200931"},"PeriodicalIF":1.7,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143929082","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}