Palaeoworld最新文献

{"title":"Middle Campanian to Maastrichtian Foraminifera and biomarkers: Seawater incursion events in the Songliao Basin, Northeast China","authors":"Ke-Ying Yue ,&nbsp;Sha Li ,&nbsp;Tian Jiang ,&nbsp;Dang-Peng Xi ,&nbsp;Bo-Wen Song ,&nbsp;Yu Liang ,&nbsp;Li-Xin Sun ,&nbsp;Tian-Fu Zhang ,&nbsp;Hai-Chun Zhang ,&nbsp;Xiao-Qiao Wan ,&nbsp;Bo Wang","doi":"10.1016/j.palwor.2025.200958","DOIUrl":"10.1016/j.palwor.2025.200958","url":null,"abstract":"<div><div>The Songliao Basin, spanning approximately 260,000 km² in Northeast China, is one of the largest oil-bearing lacustrine basins. Seawater incursion events have previously been discovered in the Turonian (lower and the uppermost Qingshankou Formation) to the Santonian and early Campanian (the first and second members of the Nenjiang Formation). We newly discovered benthic and planktonic foraminifera in the middle Campanian to Maastrichtian (Fifth Member of the Nenjiang Formation, Sifangtai, and Mingshui formations) in the ZKD-1 borehole. The Planktonic foraminifera include <em>Archaeoglobigerina blowi</em>, <em>A</em>. <em>cretacea</em>, and <em>Globotruncanella</em> sp. The benthic foraminifera include <em>Anomalinoides</em> sp., <em>Gavelinella</em> sp., and <em>Haplophragmoides</em> sp. Among them, <em>A</em>. <em>blowi</em>, <em>A</em>. <em>cretacea</em>, <em>Anomalinoides</em> sp., <em>Gavelinella</em> sp., <em>Haplophragmoides</em> sp. are widely distributed in the marine strata of the Upper Cretaceous. We tested the marine biomarker compounds including C₃₀ 24-<em>n</em>-propyl cholestane and C₃₀ 24-<em>iso</em>-propyl cholestane, indicating that the Songliao Basin experienced seawater incursion events to varying degrees during the middle to late Campanian. We also found abundant charophyte fossils in the ZKD-1 borehole, including <em>Atopochara trivolvis ulanensis</em>, <em>Latochara yuananensis</em>, <em>Feistiella anluensis</em>, <em>Mesochara biacuta</em>, <em>M</em>. <em>gobica</em>, and <em>M</em>. <em>leiocarpa</em>. Among them, the brackish water charophyte fossils of <em>Feistiella anluensis</em> were first found in Songliao Basin.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 5","pages":"Article 200958"},"PeriodicalIF":1.7,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144170130","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":"2025-10-01","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":"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":"2025-10-01","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":"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":"2025-10-01","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":"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":"2025-10-01","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":"Phylogenetic evolution of Neorotalia mecatepecensis to Miogypsinidae from Rajamandala Formation, West Java, Indonesia","authors":"Nadila Novandaru ,&nbsp;Khoiril Anwar Maryunani ,&nbsp;Rubiyanto Kapid ,&nbsp;Aswan ,&nbsp;Wahyu Budhi Khorniawan","doi":"10.1016/j.palwor.2025.200961","DOIUrl":"10.1016/j.palwor.2025.200961","url":null,"abstract":"<div><div>At Tagogapu in West Java, the Miogypsinidae larger benthic foraminifera from the Rajamandala Limestone have been studied for biometric trends in evolution. Observed taxa include <em>Neorotalia mecatepecensis</em>, <em>Paleomiogypsina</em> sp., <em>Miogypsinella bornea</em>, <em>Miogypsinoides complanatus</em>, and <em>Miogypsinoides formosensis</em>, with biometric parameters (X, Y, Z, AX, and γ) revealing distinct phylogenetic trends through heterochrony. <em>Neorotalia mecatepecensis</em> morphotype A is identified as the basal species, while <em>Neorotalia mecatepecensis</em> morphotype B diverges through nepionic retardation. The transition to <em>Paleomiogypsina</em> sp. is marked by the development of auxiliary chambers. The transition to <em>Miogypsinella bornea</em> is suggested by the addition of secondary foramen and more auxiliary chambers. The evolution to <em>Miogypsinoides complanatus</em> is characterized by the planispiral nepionic, loss of an apertural lip, and broader auxiliary chamber arrangements. The speciation of <em>Miogypsinoides formosensis</em> is recognized by the peramorphic addition of late adult stage auxiliary chambers. Biostratigraphic analysis and strontium isotopic dating place the studied taxa within the Te 2-3 to Te 4 Letter Stage (late Oligocene). This research highlights the biostratigraphic application of biometric methods in a lineage with heterochronous evolutionary trends, and proposes AX as a robust metric for the descendant peramorphic forms.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 5","pages":"Article 200961"},"PeriodicalIF":1.7,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145018792","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 new genus and species of Susumaniidae (Insecta: Phasmatodea) from the Middle Jurassic of Shaanxi Province, Northwest China","authors":"Qi-Ming Guo ,&nbsp;Chun-Peng Xu ,&nbsp;André Nel ,&nbsp;An-Cheng Peng ,&nbsp;Zhi-Gang Wen ,&nbsp;Ting Li ,&nbsp;Rui Fang ,&nbsp;Da-Ran Zheng","doi":"10.1016/j.palwor.2025.200942","DOIUrl":"10.1016/j.palwor.2025.200942","url":null,"abstract":"<div><div>A new genus and species <em>Yananphasma chresmodoides</em> n. gen. n. sp. of susumaniid (Insecta) is described from the Middle Jurassic Yan’an Formation in China, based on a well preserved complete forewing. Our observation shows that these polyneopteran insects have narrow elongate forewings with parallel veins in their distal part, have a venation of phasmatodean type instead of archaeorthopteran type, with the median vein well separated from the radial vein and cubital vein and cubitus anterior emerging from the stem cubitus.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 5","pages":"Article 200942"},"PeriodicalIF":1.7,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143947364","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":"2025-10-01","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":"New conodont fauna from the Floian (Lower Ordovician) Acoite Formation, Cordillera Oriental, Argentina","authors":"E. Kristal Rueda ,&nbsp;Guillermo L. Albanesi ,&nbsp;Gladys Ortega","doi":"10.1016/j.palwor.2025.200967","DOIUrl":"10.1016/j.palwor.2025.200967","url":null,"abstract":"<div><div>This contribution reports a new species, <em>Trapezognathus morenensis</em> n. sp., from the upper levels of the Acoite Formation outcropping in the El Moreno area of the Cordillera Oriental, northwestern Argentina. This species occurs together with <em>Trapezognathus diprion</em>, <em>Costiconus</em> sp., <em>Drepanodus arcuatus</em>, <em>Drepanoistodus costatus</em>, <em>D</em>. <em>forceps</em>, <em>D</em>. <em>pitjanti</em>, <em>Erraticodon patu</em>, <em>Gothodus costulatus</em>, <em>G</em>. <em>andinus</em>, <em>Kallidontus</em> sp., <em>Paltodus subaequalis</em>, <em>Parapanderodus</em> cf. <em>striatus</em>, <em>Paroistodus parallelus</em>, <em>Protopanderodus rectus</em>, <em>Zentagnathus argentinensis</em>, <em>Gothodus</em> spp., and Drepanoistodontid gen. et sp. indet. <em>Trapezognathus morenensis</em> n. sp. exhibits intermediate characteristics between <em>T</em>. <em>diprion</em> and <em>T</em>. <em>quadrangulum</em>, and also displays a close relationship with early species of the genus <em>Baltoniodus</em>. The conodont assemblage allows for the identification of the <em>Gothodus andinus</em> and <em>Trapezognathus diprion</em> zones, indicating a middle to late Floian (Early Ordovician) age. In addition, the boundary between the <em>Gothodus andinus</em> Zone and the succeeding <em>Trapezognathus diprion</em> Zone is defined by the first occurrence datum of <em>Trapezognathus diprion</em> within the same stratigraphic section, representing the first documented instance of this boundary. The revision of associated taxa with reported <em>Trapezognathus</em> spp. suggests that the definition of the Floian–Dapingian boundary still requires verification in the Cordillera Oriental of Argentina.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 5","pages":"Article 200967"},"PeriodicalIF":1.7,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145048729","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":"Cretaceous–Paleogene palynodebris from two offshore cores in Cape Basin, South Atlantic Ocean and their paleoenvironmental implications","authors":"A. Sandersen ,&nbsp;L. Scott ,&nbsp;F.H. Neumann ,&nbsp;E.W. Bergh ,&nbsp;M. Bachari","doi":"10.1016/j.palwor.2025.200965","DOIUrl":"10.1016/j.palwor.2025.200965","url":null,"abstract":"<div><div>Palynodebris in two cores from the western South African margin provides an opportunity for investigating stratigraphical changes across the Cretaceous/Paleogene (K/Pg) boundary and the depositional environments during this interval. Changing palynodebris trends of more than 200 sidewall cores and cuttings, sampled from two offshore ocean borehole sites ca. 243 km apart and situated in the Cape Basin, reflect the regional environmental processes during the Cretaceous and early Cenozoic. Thirteen categories of microscopic structures of palynomorphs and palynodebris (phytoclasts) are identified and recorded. These categories include amorphous organic matter, marine palynomorphs, fresh-water algae, resins, black debris (charcoal), yellow-brown fragments, black-brown fragments (including microscopic charcoal), cuticles, plant tissues, woody material, sporomorphs, and fungal material such as fungal spores, fruit bodies, tubes and filaments. The relative abundances of these organic components from each site were analyzed and compared. Palynodebris compositions and patterns differ between borehole sites over time but also show some similar regional trends, e.g., growing indications of burning from the Late Cretaceous to early Paleocene. The woody component suggests that both offshore sites received similar land-derived Cretaceous and Cenozoic sediments via fluvial transport. Palynodebris was compared to previously published palynological data from the cores, showing shifts in vegetation and climate. Around and shortly after the K/Pg boundary, black debris and yellow-brown debris components fluctuate strongly and could possibly be related more to the transition from the Maastrichtian regressive events than a terminal K/Pg boundary event. Stronger marine influence, as indicated by an increase of marine palynomorphs together with geological evidence of glauconitic sandstone, <em>Inoceramus</em>, other bivalves, and shelly material during the Late Cretaceous and Paleogene, reflects the flooding of the basin. The stratigraphy and depositional environments contribute to a better understanding of conditions associated with the opening of the South Atlantic Ocean.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 5","pages":"Article 200965"},"PeriodicalIF":1.7,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145018791","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}