Marine Micropaleontology最新文献

{"title":"Patterns of morphological variation in coiling forms of the planktic foraminifer Pulleniatina obliquiloculata across the Pleistocene L5 coiling event (Solomon Sea)","authors":"Robert Swisher,&nbsp;Li Lo","doi":"10.1016/j.marmicro.2025.102505","DOIUrl":"10.1016/j.marmicro.2025.102505","url":null,"abstract":"<div><div>The Plio-Pleistocene boundary, an interval marked by global changes in oceanic and climatic conditions, is thought to be influenced by shifts in the Pacific warm pool and East African monsoon around 2.1–1.7 million years ago (Ma). This interval is characterized by the globally recognized L5 event when specimens of the planktic foraminiferal genus <em>Pulleniatina</em> shifted the coiling of chambers from dominantly dextral to sinistral. The L5 event offers a unique opportunity to examine the morphological response of foraminifera to changing oceanographic and climatic conditions. This study utilizes a dataset of the species <em>Pulleniatina obliquiloculata</em> from the Solomon Sea (ODP Hole 1115B) across the L5 event by applying novel 2D Landmark geometric-morphometric analyses to examine morphological variation of coiling morphotypes prior to, during, and immediately after the L5 coiling event. Results suggest distinctive morphologies in dextral and sinistral forms beside coiling arrangement before the L5, with morphological disparity drastically decreasing during the L5. Subsequently, morphological variation and disparity increased again during and after the L5 event, leading to distinct Left and Right morphotypes compared to prior forms. Results suggest that near-cryptic populations may have existed within <em>Pulleniatina obliquiloculata</em>, and are potentially indicative of a regional faunal turnover event and a morphological bottleneck at L5 initiation.</div></div>","PeriodicalId":49881,"journal":{"name":"Marine Micropaleontology","volume":"206 ","pages":"Article 102505"},"PeriodicalIF":1.8,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148958147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Origin and evolution of the Ordovician conodont genus Kirkupodus and its significance in palaeobiogeography","authors":"Yong Yi Zhen","doi":"10.1016/j.marmicro.2026.102592","DOIUrl":"10.1016/j.marmicro.2026.102592","url":null,"abstract":"<div><div><em>Kirkupodus</em> is revised based on re-examination of its type species, <em>Kirkupodus tricostatus</em>, from the Billabong Creek Formation of New South Wales, together with the study of three new species—<em>Kirkupodus extentus</em> sp. nov., <em>K. gracilentus</em> sp. nov., and <em>Kirkupodus</em>? sp. nov.—from the Emanuel Formation and the upper part of the underlying Kudata Dolostone in the Canning Basin, Western Australia. <em>Scalpellodus crespinae</em> from the Horn Valley Siltstone of the Amadeus Basin and <em>Scalpellodus percivali</em> from the subsurface Goldwyer and Nita formations of the Canning Basin are reassigned to <em>Kirkupodus</em>. Species of <em>Kirkupodus</em> are characterised by a seximembrate or septimembrate coniform apparatus comprising a nongeniculate makellate M element, costate S elements, and short-based, typically drepanodiform P elements. Collectively, these species form an evolutionary lineage with a stratigraphic range extending from the upper Tremadocian to the middle Darriwilian. Based on strong similarities in apparatus architecture and constituent element types, <em>Kirkupodus</em> shows a close phylogenetic affinity with <em>Protopanderodus</em> and constitutes the basal clade of the Protopanderodontidae. New data from Australia suggest that <em>Kirkupodus</em> may have evolved from an autapomorphic species within the <em>Variabiloconus</em> lineage. Biogeographically, <em>Kirkupodus</em> species are known from Australia and possibly from several Chinese terranes and Sibumasu, indicating an eastern Gondwanan origin and distribution.</div></div>","PeriodicalId":49881,"journal":{"name":"Marine Micropaleontology","volume":"205 ","pages":"Article 102592"},"PeriodicalIF":1.8,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148553854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Abundance of Liquidambar during MIS 5 indicates a significantly warmer climate than MIS 1 along the South Yellow Sea coast","authors":"Jie Li ,&nbsp;Zhaofeng Gu ,&nbsp;Zhenhe Wen ,&nbsp;Shixiong Yang ,&nbsp;Gayan Bandara ,&nbsp;Baojun Wang ,&nbsp;Xi Mei ,&nbsp;Chuanxiu Luo ,&nbsp;Yachao Qin","doi":"10.1016/j.marmicro.2026.102577","DOIUrl":"10.1016/j.marmicro.2026.102577","url":null,"abstract":"<div><div>The relative warmth of different interglacial periods provides crucial insights into climate system sensitivity under varying boundary conditions. While global proxy records indicate that the Last Interglacial (MIS 5, specifically MIS 5e) was warmer than the present Holocene (MIS 1), quantitative terrestrial evidence from temperature-sensitive proxies in East Asia remains scarce. In this study we present a new high-resolution palynological record from core LYK-1 in the western South Yellow Sea (SYS), spanning from MIS 5 to the present, to quantitatively assess the relative warmth of these two interglacials. We utilize the pollen of <em>Liquidambar</em>, a thermophilous genus with stringent climatic requirements, as a key temperature proxy. By integrating pollen data with robust lithological, foraminiferal, and chronological controls, we first disentangle the influences of sea-level change and depositional environment on the pollen assemblages to isolate the climatic signal. By further comparison with the surrounding records, the results reveal a striking contrast: <em>Liquidambar</em> pollen is significantly more abundant during MIS 5 than MIS 1. This indicates that the MIS 5e climate along the SYS coast was substantially warmer and more humid than the Holocene, allowing for a notable northward expansion of subtropical flora. The herbaceous pollen dominance throughout the core is interpreted as a signature of fluvial transport dynamics in this inner-shelf setting rather than a purely open landscape. This well-dated record provides robust terrestrial evidence for a significantly warmer MIS 5 in East Asia, underscoring the region's sensitivity to interglacial intensity and offering a valuable paleo-analogue for understanding future warming scenarios.</div></div>","PeriodicalId":49881,"journal":{"name":"Marine Micropaleontology","volume":"204 ","pages":"Article 102577"},"PeriodicalIF":1.6,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147849502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to “Early Cretaceous radiolarians and siliceous rock geochemistry from Kangmar, Southern Xizang: Biostratigraphic, paleoenvironmental, and paleogeographic implications for the Neo-Tethys Ocean” [Marine Micropaleontology 201 (2025) 102523]","authors":"Han Yan ,&nbsp;Hanting Zhong ,&nbsp;Chenyu Wang ,&nbsp;Zongqi Lin ,&nbsp;Cai Wang ,&nbsp;Xiachao Huang ,&nbsp;Chao Chen ,&nbsp;Mingcai Hou","doi":"10.1016/j.marmicro.2026.102580","DOIUrl":"10.1016/j.marmicro.2026.102580","url":null,"abstract":"","PeriodicalId":49881,"journal":{"name":"Marine Micropaleontology","volume":"204 ","pages":"Article 102580"},"PeriodicalIF":1.6,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147995507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Calcareous nannofossil assemblage changes in the Surprise Hill core and their implications for floral response to the Paleocene-Eocene Thermal Maximum across the Salisbury Embayment of Virginia, USA","authors":"Masayuki Utsunomiya ,&nbsp;Jean M. Self-Trail ,&nbsp;D. Clay Kelly ,&nbsp;Xiaodong Zhang ,&nbsp;Kristina F. Gardner ,&nbsp;James C. Zachos","doi":"10.1016/j.marmicro.2026.102579","DOIUrl":"10.1016/j.marmicro.2026.102579","url":null,"abstract":"<div><div>We present Paleocene-Eocene calcareous nannofossil biostratigraphy and paleoecology for the Surprise Hill core, U.S. Atlantic Coastal Plain, Virginia. Calcareous nannofossil datums ranging from Zone NP3 to NP14 were identified. The Danian-aged Brightseat Formation rests unconformably atop the Lower Cretaceous Potomac Group at 211.4 m and disconformably underlies the Aquia Formation at 208.8 m. The absence of Zone NP7 suggests a hiatus is present in the Aquia Formation (Zones NP5 – NP9a). The contact between the Marlboro Clay and the overlying Nanjemoy Formation (Zones NP10 – NP14) at 189.5 m is truncated. The Paleocene-Eocene transition is marked by a shift from glauconitic sands of the Aquia Formation to pelitic muds of the Marlboro Clay at 202.7 m. A 3–3.5‰ negative δ¹³C excursion of benthic foraminifer and a thin dissolution interval (201.6–202.5 m) are recorded in the basal Marlboro Clay. Nannofossil response to the Paleocene-Eocene Thermal Maximum (PETM) include (1) a bloom in taxa with affinities for changing salinity conditions just prior to the PETM basin wide (<em>Hornibrookina australis arca</em>), (2) a decline in taxa with ecological affinities for cool, eutrophic waters (<em>Chiasmolithus bidens</em>) during PETM, (3) fluctuations in mesotrophic to eutrophic, opportunistic taxa (e.g., <em>Neochiastozygus junctus</em>) during PETM, (4) successive turnovers in species of <em>Toweius</em> spp. during core-PETM and its recovery. Our findings suggest that overall nannofossil assemblages in the southernmost portion of the Salisbury Embayment responded similarly to assemblages from South Dover Bridge, but had differing response to local changes in nearshore paleoecology.</div></div>","PeriodicalId":49881,"journal":{"name":"Marine Micropaleontology","volume":"204 ","pages":"Article 102579"},"PeriodicalIF":1.6,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147956612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Holocene coastal sedimentary evolution of the southern Taihu Plain, East China","authors":"Yuhai Wang ,&nbsp;Bing Song ,&nbsp;Deke Xu ,&nbsp;Yulong Niu ,&nbsp;Peng Qian ,&nbsp;Ting Chen ,&nbsp;Ye Yang ,&nbsp;Feng Wang ,&nbsp;Jun Kuang ,&nbsp;Hao Li ,&nbsp;Chang Li ,&nbsp;Jiatong Lü ,&nbsp;Jie Liu ,&nbsp;Houyuan Lü ,&nbsp;Xiangdong Yang","doi":"10.1016/j.marmicro.2026.102578","DOIUrl":"10.1016/j.marmicro.2026.102578","url":null,"abstract":"<div><div>The formation and evolution of the Taihu Plain during the Holocene have significantly influenced the development of Neolithic cultures in the region. Based on AMS ¹⁴C dating, lithological analyses of cores SZ24 and SZ50, and pollen analyses of core SZ24, and supplemented with previous results from cores SE2 and JLQ, this study reconstructs the Holocene depositional history of the southern Taihu coastal zone. The Late Pleistocene surface represented an ancient plain incised by palaeo-valleys near the Qiantang River. Holocene sediments overlie this substrate and record a transgressive estuarine environment during the early Holocene, followed by plain progradation during a relatively slow rise and gradual stabilization of mid-Holocene sea-level. After ∼7.0–5.7 cal kyr BP, the southern Taihu Plain gradually emerged, forming the modern landscape. The sedimentary processes differ from those of larger estuaries in East Asia during the middle to late Holocene, possibly due to the absence of a large river discharging into the palaeo-estuary.</div></div>","PeriodicalId":49881,"journal":{"name":"Marine Micropaleontology","volume":"204 ","pages":"Article 102578"},"PeriodicalIF":1.6,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147849503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dinoflagellate cysts in sediment traps from the Nordic Seas: Implications for their use as proxies in paleoceanography","authors":"Amy L. Dale ,&nbsp;Barrie Dale","doi":"10.1016/j.marmicro.2026.102554","DOIUrl":"10.1016/j.marmicro.2026.102554","url":null,"abstract":"<div><div>The Nordic seas are important for bottom water formation and heat transfer in global climate, and dinoflagellate cysts are a major microfossil group in cored sediments from high latitudes where mineralized fossils are absent due to dissolution. This first basin-wide study of dinoflagellate cysts in deep-sea sediment traps reassesses the basic assumptions of paleoceanographic proxies: that dinoflagellate cysts in bottom sediments represent primary environmental signals from overlying surface waters carried by cysts sinking without significant lateral transport. We studied 126 samples collected at 12–30 day intervals over one year from traps (approximately 400 m above bottom) at 9 stations. We recorded 27 cyst taxa quantitatively (cyst fluxes) and as assemblages calculated from the fluxes. Correspondence analysis was used to compare cyst assemblages from traps with those in recent bottom sediments used to create proxies. The generally high correlation shown between fluxes of cysts and lithogenic particles suggests common transport mechanisms for both. We show three different sources of cysts and environmental signals: primary, from oceanic surface waters; secondary, transported in from shallow adjoining waters and ocean currents; and tertiary, older cysts resuspended from shelves. We found poor correspondence between cysts in traps and those in bottom sediments mainly due to the dominance of <em>O. centrocarpum</em> in the sediments, but correspondence analysis identified the main current regimes in both. We propose that <em>O. centrocarpum</em> here and elsewhere in oceanic sediments reflects an opportunistic response to mixing of oceanic/shelf waters. Consideration of factors highlighted here should help to improve the use of proxies.</div></div>","PeriodicalId":49881,"journal":{"name":"Marine Micropaleontology","volume":"203 ","pages":"Article 102554"},"PeriodicalIF":1.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147399406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Gradual turnover in the composition of benthic foraminiferal assemblages across the Sinemurian/Pliensbachian boundary in the Transcarpathian Ukraine (Pieniny Klippen Belt, Eastern Carpathians)","authors":"Štefan Józsa ,&nbsp;Adam Tomašových ,&nbsp;Ján Schlögl ,&nbsp;Christian Meister ,&nbsp;Vladimír Šimo","doi":"10.1016/j.marmicro.2026.102551","DOIUrl":"10.1016/j.marmicro.2026.102551","url":null,"abstract":"<div><div>The Sinemurian/Pliensbachian boundary interval in the eastern part of the Pieniny Klippen Belt (Eastern Carpathians, Ukraine) is preserved in a succession formed by a marl-limestone alternation that was deposited in a low-energy, outer shelf environment on the NW margin of the Tethys shelf (Euroboreal Province). Assemblages with benthic foraminifers are diverse, with fifteen agglutinated species and 64 calcareous species. Although most species range across the Sinemurian/Pliensbachian boundary, the assemblages of agglutinated and calcareous benthic foraminifers exhibit a gradual and protracted change in abundance of species, genera, and functional morphogroups during this time interval. The increase in abundance of lenticular (C8) and elongated-flattened (C6) morphogroups and the decline in abundance of elongated morphogroups with a straight periphery (C8) across the boundary is gradual. This turnover in taxonomic and functional composition can be related to an increase in ventilation and bottom currents that decreased any incidences of oxygen depletion, reduced organic matter preservation, and allowed the onset of sponge biostromes during the earliest Pliensbachian. In contrast to stratigraphic changes in abundance of individual species, alpha species (mean = 21) and genus (mean = 11) diversity remains rather constant across the S/P boundary and the overall assemblage composition is persistently dominated by deposit-feeders and grazing omnivores both in the uppermost Sinemurian and the lowermost Pliensbachian. Therefore, although the overall shallowing-up trend in outer-shelf habitats contributed to directional changes in abundance of some species, genera and morphogroups, they did not induce any major turnover, extirpation or immigration at species or genus level.</div></div>","PeriodicalId":49881,"journal":{"name":"Marine Micropaleontology","volume":"203 ","pages":"Article 102551"},"PeriodicalIF":1.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Increase the magnification, they are shrinking! Morphometric variations of the planktic foraminifera Globigerina bulloides in response to environmental changes over the last 27.4 ka in the Ligurian Sea","authors":"Pierluigi Martinelli ,&nbsp;Isabel Cacho ,&nbsp;Elena Cavallero ,&nbsp;Antonio Cascella ,&nbsp;Letizia Di Bella ,&nbsp;Fabrizio Lirer ,&nbsp;Mar Selvaggi ,&nbsp;Rocco Gennari","doi":"10.1016/j.marmicro.2026.102552","DOIUrl":"10.1016/j.marmicro.2026.102552","url":null,"abstract":"<div><div>This study investigates the test size variability of the planktic foraminifera <em>Globigerina bulloides</em> over the past 27.4 ka from sediment core NDT_22_2016, collected in the Ligurian Sea. This climatically sensitive region provides an ideal setting to explore how large-scale glacial-interglacial oscillations influenced the phenotypic plasticity of the non-symbiotic planktic foraminifer <em>G. bulloides</em> through changes in surface-water conditions.</div><div>We explore the relationships between test size and sea surface temperature (SST), relative salinity (δ¹⁸Osw-ivc), and atmospheric CO₂. To test this, over 3400 specimens from 110 samples were analysed. Morphometric data were obtained through high-resolution imaging and automated area measurements, while environmental variables were derived from Mg/Ca-based SST reconstructions and stable isotope analyses, both performed on <em>G. bulloides</em> tests, and from published ice core CO₂ records.</div><div>Descriptive statistics reveal a significant reduction in test size from the Pleistocene to the Holocene, with the largest specimens recorded during the Younger Dryas. Generalized linear mixed models (GLMMs) indicate that <em>G. bulloides</em> tests size responds significantly to environmental forcing: size decreases with increasing SST, consistent with Atkinson's temperature-size rule; increases (although less significantly) with increasing δ¹⁸Osw-ivc; and exhibits a non-linear (quadratic) relationship with CO₂. The occurrence of larger tests at lower temperatures and higher salinities could also be related to higher productivity in a paleoceanographic context that favoured water-column mixing and surface fertilization. To test the possible productivity-size relationship, we used the abundance of <em>G. bulloides</em> as a proxy for productivity, but no significant relationship was revealed by the GLMM.</div></div>","PeriodicalId":49881,"journal":{"name":"Marine Micropaleontology","volume":"203 ","pages":"Article 102552"},"PeriodicalIF":1.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147399402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Foraminiferal biostratigraphy, paleoenvironmental interpretation, and sequence stratigraphy of the latest Maastrichtian–Thanetian succession in the Southern Galala Plateau, Eastern Desert, Egypt","authors":"Aziz M. Abu Shama ,&nbsp;Sherif Farouk ,&nbsp;Ahmed Abdelwahhab ,&nbsp;Youssef S. Bazeen","doi":"10.1016/j.marmicro.2026.102555","DOIUrl":"10.1016/j.marmicro.2026.102555","url":null,"abstract":"<div><div>We present an integrated study of two stratigraphic sections from the Southern Galala Plateau that combines foraminiferal biostratigraphy with quantitative paleoenvironmental proxies and sequence stratigraphic analysis across the latest Maastrichtian–Thanetian interval. High-resolution planktic zonations (Maastrichtian CF2–CF1; Paleocene P1c–P4c) reveal variable temporal hiatuses at the Cretaceous/Paleogene (K/Pg) boundary, with an abrupt planktic foraminifera extinction, a low benthic foraminiferal extinction (∼9%), and drops in TFN, HOFS%, and paleodepth, followed by increased EBFOI, reflecting improved bottom water oxygenation in the Danian. The Latest Danian Event (LDE) is recorded only in South Wadi El-Maheer, characterized by brown nodular calcareous shale, high HOFS%, low EBFOI, a paleodepth drawdown, and the invasion of the <em>Neoeponides duwi</em> assemblage. The Danian/Selandian (D/S) boundary exhibits a pronounced sea-level fall, mirroring the global signal. Its placement varies between both sections due to differences in hiatus magnitude, which is greater in Wadi Ragela, as indicated by an abrupt planktic foraminiferal assemblage shift and the reduced thickness of P3a and P3b. The sequence stratigraphic analysis revealed seven third-order depositional sequences in Wadi Ragela and five in South Wadi El-Maheer. The proposed sequence stratigraphic framework confirms that the study area was influenced by eustatic changes and regional tectonic activities.</div></div>","PeriodicalId":49881,"journal":{"name":"Marine Micropaleontology","volume":"203 ","pages":"Article 102555"},"PeriodicalIF":1.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147399403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}